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Old 04-15-2013, 10:13 PM   #1
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Tire size

Hey I was just wondering if anyone put 315/35/17 on the back of an sn95 and if they rub thank you
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Old 04-16-2013, 11:36 AM   #2
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Originally Posted by 94CobraUSMC
Hey I was just wondering if anyone put 315/35/17 on the back of an sn95 and if they rub thank you
I don't think they will fit what's your rims offset? If there stock offset then no they won't fit
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Old 04-16-2013, 12:08 PM   #3
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Gonna rub.
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Old 04-16-2013, 12:34 PM   #4
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The 315s will require a mini tub or you beating out your fenders with a hammer and "massaging" the wheel wells. I would recommend a profesionaly welded in mini tub kit if your dead set on 315's
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Old 04-16-2013, 01:00 PM   #5
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i've never heard of mini tube? whats that?
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Old 04-16-2013, 03:37 PM   #6
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Not tube, tub, like a bath tub. Tubbing the rear wheel wells means a shop cuts out the inside of your factory wheel wells and welds in sheet metal in its place to allow for a wider tire on the back. The sheet metal is welded in place of the 2 carpeted wheel well humps you see on the inside of a car trunk and is only useful on RWD vehicles. Difference between mini and full tub is simply the amount of sheet metal that is used when you cut away the inside of the wheel well. A full tub can support a 16 inch wide tire or more, its a custom fabrication. The "mini" tub is simply just a small tub.
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Old 04-16-2013, 03:42 PM   #7
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Thanks guys probably not goin to tub it some people said flip the quads and they'll fit
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Old 04-16-2013, 04:11 PM   #8
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Oh I see now.
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Old 04-16-2013, 05:31 PM   #9
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Yea I don't wanna tub the car though so I might go with spacers or something some people said they didn't have a problem others said they flipped there quads
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Old 04-16-2013, 08:48 PM   #10
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Cut the fenders like a gasser and just put flares.
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Old 04-16-2013, 09:14 PM   #11
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Ha no no it's a bone stock 94 cobra with less than 100000 miles on it.
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Old 04-17-2013, 11:30 AM   #12
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Originally Posted by 94CobraUSMC
Thanks guys probably not goin to tub it some people said flip the quads and they'll fit
A 315 won't fit even if you do that you probly won't even get 305s under it I got 255 on my fox an had to remove my quads because even up side down they still were gunna rubb a tub would be the only way to fit those
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Old 04-17-2013, 11:34 AM   #13
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But that's a fox mines an sn95 I've been lookin around a lot and found an SVT cobra forum that's where they said they fit
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Old 04-17-2013, 05:12 PM   #14
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But that's a fox mines an sn95 I've been lookin around a lot and found an SVT cobra forum that's where they said they fit
Ok try it an see it's your money because there's no way a sn95 will fit that much bigger of a tire then a fox... I know it won't... with out making more room. hey try an see just when it don't work out then you'll know why evenones telling you that it needs a mini tub before you can. Ps iv worked on a sn95 before I know they don't fit to much bigger of a tire then a fox....
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Old 04-17-2013, 05:34 PM   #15
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Ok try it an see it's your money because there's no way a sn95 will fit that much bigger of a tire then a fox... I know it won't... with out making more room. hey try an see just when it don't work out then you'll know why evenones telling you that it needs a mini tub before you can. Ps iv worked on a sn95 before I know they don't fit to much bigger of a tire then a fox....
I'm gonna try to fit my dads off his Mach and see if they fit first
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Old 04-17-2013, 05:42 PM   #16
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A 315 won't fit even if you do that you probly won't even get 305s under it I got 255 on my fox an had to remove my quads because even up side down they still were gunna rubb a tub would be the only way to fit those
There's a lot of people running 315s on the back of sn95s with 18 inch wheels. You have to have a different offset wheel to fit them and I think you have to remove the quad shocks And by the way 94-95 cobras came stock with 255s
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Old 04-17-2013, 06:48 PM   #17
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There's a lot of people running 315s on the back of sn95s with 18 inch wheels. You have to have a different offset wheel to fit them and I think you have to remove the quad shocks And by the way 94-95 cobras came stock with 255s
Yea I've seen sn95's with some meats on them not tubbed but ill tell you guys how it works with 95 cobra r rims
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Old 04-17-2013, 06:52 PM   #18
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My friend has 315s and they don't rub at all. He has deep dish gt500 wheels though



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Old 04-17-2013, 06:56 PM   #19
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My friend has 315s and they don't rub at all. He has deep dish gt500 wheels though
Yea that looks damn good
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Old 04-17-2013, 07:00 PM   #20
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Yea that looks damn good
He did roll his fenders but no rubbing
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Old 04-17-2013, 07:01 PM   #21
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He did roll his fenders but no rubbing
How much is it lowered
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Old 04-17-2013, 07:05 PM   #22
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How much is it lowered
I think 2.5 but I could be wrong. I know he can't go any lower
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Old 04-17-2013, 07:08 PM   #23
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I think 2.5 but I could be wrong. I know he can't go any lower
It doesn't look like it. It's a good looking car though I let everyone know of the 315's work for me if they fit on an 03 they should fit on a 95 then right
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Old 04-17-2013, 07:15 PM   #24
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It doesn't look like it. It's a good looking car though I let everyone know of the 315's work for me if they fit on an 03 they should fit on a 95 then right
Yeah I have a 03 with 315 and I have plenty of room
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Old 04-17-2013, 07:19 PM   #25
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Yeah I have a 03 with 315 and I have plenty of room
Ok I won't know until Tuesday though when I get back to the states
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Old 04-17-2013, 07:38 PM   #26
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Ok I won't know until Tuesday though when I get back to the states
Well be sure to let us know how they fit! And appreciate your service!
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Old 04-17-2013, 11:58 PM   #27
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A 315 won't fit even if you do that you probly won't even get 305s under it I got 255 on my fox an had to remove my quads because even up side down they still were gunna rubb a tub would be the only way to fit those
I fit 275s under my dropped fox and have/had 0 rubbing issues even with the quads still on. Have another fox with 305s on his and he has no issues with the quads removed.

Op I've seen 315s on an sn95 with no mini tub but I'm not sure of what other work was done. I'm sure he probably had to roll the fenders.
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Old 04-18-2013, 03:51 AM   #28
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Well be sure to let us know how they fit! And appreciate your service!
I will and thanks for all the input from everyone and no problem
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Old 04-18-2013, 08:54 AM   #29
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Im willing to bet the fenders were rolled or "massaged" as I said earlier to make the his 315's fit but Ive been wrong before. Of coarse you do realize putting this big of a wheel/tire on a stock N/A mustang will most likely slow it down.. More important than tire size is tire patch contact which means the type of tire used has the larger impact on traction, bigger tires and wheels just add unwanted weight from a performance aspect. However if you just like the look of the big meats I say go for it, just dont use a japanese tire. Try and go with Goodyear Eagle F1's or BFG rubber in an effort to not loose performance.
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Old 04-18-2013, 10:01 AM   #30
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Im willing to bet the fenders were rolled or "massaged" as I said earlier to make the his 315's fit but Ive been wrong before. Of coarse you do realize putting this big of a wheel/tire on a stock N/A mustang will most likely slow it down.. More important than tire size is tire patch contact which means the type of tire used has the larger impact on traction, bigger tires and wheels just add unwanted weight from a performance aspect. However if you just like the look of the big meats I say go for it, just dont use a japanese tire. Try and go with Goodyear Eagle F1's or BFG rubber in an effort to not loose performance.
I said he rolled the lip of the fender but that's it. And you can't tell a difference in speed. It's only a matter of a few pounds. That will not slow you down when you are better out of the hole. But I have another friend with a 03 gt and he has 345 and all he did was roll them. Looks sick though
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Old 04-18-2013, 01:05 PM   #31
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Yea for now they're for look but after I leave its getting stroked then after my "deployment" it's gonna get heads intake a cam and headers so then the meats with become more use useful
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Old 04-18-2013, 05:43 PM   #32
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DSG2003 understand you said he rolled his fenders and they fit. I should have included the option of rolling the fenders in the first place but my initial point was the 315's wouldnt fit outright without changing somthing for them to fit.

Anyhow heres my thoughts on the 315's, yes the extra weight does hurt rolling performance more and more then higher the MPH you go. It is also possible, and most likely will, for the heavier wheel/tire to make his stocker bog more during launch. Usually extra bog hurts stockers performance hole shots depending on drivers skill and ability. In this case we are talking about a manual car since he has a cobra which means he can raise his launch RPM to compensate for the bigger tires which will most likely help him but you cant do that with an auto car without swaping torque converters. However just because performance is most likely increased in this case with the wider tire doesnt mean that his new launch RPM is the optimum launch spot for his engine and gear combination which means there is performance left on the table if all that was going to be done was a simple wheel/tire change. And yes in a stocker I have noticed a difference in speed with wheel changes. If dropping 15 lbs off your driveshaft nets you .2 second E/T in the 1/4 why wouldnt you notice the difference in a wheel/tire combo that is a few pounds heavier?

Marine, if I were you id hang onto the original parts and stuff just in case, they add value to your car. Also make sure you stiffen up the chasis before you add too much power or tire, if you twist your chasis your car may never be able to have the body straighten perfectly which means youll have a harder time getting your car to run straight. I only say that because it seems you have high performance goals with a stroker and HCI combo in mind.
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Old 04-19-2013, 03:29 AM   #33
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DSG2003 understand you said he rolled his fenders and they fit. I should have included the option of rolling the fenders in the first place but my initial point was the 315's wouldnt fit outright without changing somthing for them to fit.

Anyhow heres my thoughts on the 315's, yes the extra weight does hurt rolling performance more and more then higher the MPH you go. It is also possible, and most likely will, for the heavier wheel/tire to make his stocker bog more during launch. Usually extra bog hurts stockers performance hole shots depending on drivers skill and ability. In this case we are talking about a manual car since he has a cobra which means he can raise his launch RPM to compensate for the bigger tires which will most likely help him but you cant do that with an auto car without swaping torque converters. However just because performance is most likely increased in this case with the wider tire doesnt mean that his new launch RPM is the optimum launch spot for his engine and gear combination which means there is performance left on the table if all that was going to be done was a simple wheel/tire change. And yes in a stocker I have noticed a difference in speed with wheel changes. If dropping 15 lbs off your driveshaft nets you .2 second E/T in the 1/4 why wouldnt you notice the difference in a wheel/tire combo that is a few pounds heavier?

Marine, if I were you id hang onto the original parts and stuff just in case, they add value to your car. Also make sure you stiffen up the chasis before you add too much power or tire, if you twist your chasis your car may never be able to have the body straighten perfectly which means youll have a harder time getting your car to run straight. I only say that because it seems you have high performance goals with a stroker and HCI combo in mind.
I'm still debating the stoker I am going to hold on to all the stock parts bc I think the same way someone might like it better stock or may be more valuable but I also just want 350-400hp to be able to keep up and have a bit of fun
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Old 04-19-2013, 09:17 AM   #34
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The value of the car is much higher in bone stock trim. But 350-400 hp eh? Your talking to the right person. First dont use nitrous on your cobra if you want to retain its value. Second a good HCI with exhuast will put you at 340+RWHP and put you in the 12's easy without having to do a stroker. Would run 11's with full suspension and slicks, but I wouldnt recommend that for your cobra. Since your cobra already has a B-cam .480/.480 which is a single profile cam your best performing heads and intake are FoxLakes Stage 1 ported Trick Flow Twisted Wedge Heads which are 175cc with matching Trick Flow intake on your car to maximize power and they will retain driveability if your not going to use a large stroker. Upgrade to a 3.90 rear gears to compliment the Bcam, you wont notice performance gain by going up only 1 gear set size to 3.73's from your 3.55's and 4.10's are too much gear for a manual windsor street stang which brings us to 3.90's. The 4.10's require a power robbing shift into 4th gear at the end of the 1/4 mile track which also takes us to 3.90's to maximize 1/4mile performance. Do a full exhuast/induction system with a good tune and you will be 350rwhp+ with your A/C still on the car. But dont forget to upgrade your driveshaft, axles, and radiator to handle the extra power. My recommendation for induction is use JLT CAI and Accufab 70mm TB. For exhuast use what ever performance exhuast you like to reach the 350+ as long as you use 1 5/8 long tubes.
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Old 04-19-2013, 12:28 PM   #35
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The value of the car is much higher in bone stock trim. But 350-400 hp eh? Your talking to the right person. First dont use nitrous on your cobra if you want to retain its value. Second a good HCI with exhuast will put you at 340+RWHP and put you in the 12's easy without having to do a stroker. Would run 11's with full suspension and slicks, but I wouldnt recommend that for your cobra. Since your cobra already has a B-cam .480/.480 which is a single profile cam your best performing heads and intake are FoxLakes Stage 1 ported Trick Flow Twisted Wedge Heads which are 175cc with matching Trick Flow intake on your car to maximize power and they will retain driveability if your not going to use a large stroker. Upgrade to a 3.90 rear gears to compliment the Bcam, you wont notice performance gain by going up only 1 gear set size to 3.73's from your 3.55's and 4.10's are too much gear for a manual windsor street stang which brings us to 3.90's. The 4.10's require a power robbing shift into 4th gear at the end of the 1/4 mile track which also takes us to 3.90's to maximize 1/4mile performance. Do a full exhuast/induction system with a good tune and you will be 350rwhp+ with your A/C still on the car. But dont forget to upgrade your driveshaft, axles, and radiator to handle the extra power. My recommendation for induction is use JLT CAI and Accufab 70mm TB. For exhuast use what ever performance exhuast you like to reach the 350+ as long as you use 1 5/8 long tubes.
That's good stuff right there and I was suck between the performer head and the twisted wedge
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