245's vs 275's - Mustang Evolution

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Old 11-09-2013, 05:37 PM   #1
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245's vs 275's

What are the differences between the 2 tires?

I want to upgrade my tires, they are the 19 inch GT Premium tires, so I'm fairly certain they are 245's, the tires I'm looking at getting are the RTR's 275 all 4 tires.
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Old 11-09-2013, 05:40 PM   #2
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30mm
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Old 11-09-2013, 05:52 PM   #3
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30mm
Performance wise, cost, etc. I'll ignore that comment...
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Old 11-09-2013, 05:57 PM   #4
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The wider tire is always going to grip the ground more, given the compound of the tire is exactly the same, because there is more tire touching the ground.

I personally have 275s up front and 285s out back. With the 285s out back i feel a major difference in how they grip the road on launch. And with the 275s up front i feel a major difference on how they grip the road when doing stuff like autocross.

Since there is more tire, of course its going to cost more than 245s.

And being 19 that you have, tires are going to be harder to find, and more expensive. Tires for 19s are not that common.

What else do you want to know about the tires?
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Old 11-09-2013, 06:00 PM   #5
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Performance wise, cost, etc. I'll ignore that comment...
Apparently you didn't though
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Old 11-09-2013, 06:03 PM   #6
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The wider tire is always going to grip the ground more, given the compound of the tire is exactly the same, because there is more tire touching the ground. I personally have 275s up front and 285s out back. With the 285s out back i feel a major difference in how they grip the road on launch. And with the 275s up front i feel a major difference on how they grip the road when doing stuff like autocross. Since there is more tire, of course its going to cost more than 245s. And being 19 that you have, tires are going to be harder to find, and more expensive. Tires for 19s are not that common. What else do you want to know about the tires?
not much, you basically covered it all.
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Old 11-09-2013, 06:03 PM   #7
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If you don't know that a wider tire will grip better and cost a little more....due to the fact that there is more tire/rubber. How am I to assume you know what the actual sizes mean?
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Old 11-09-2013, 06:08 PM   #8
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If you don't know that a wider tire will grip better and cost a little more....due to the fact that there is more tire/rubber. How am I to assume you know what the actual sizes mean?
I figured it would grip better, I guess I phrased the question wrong, I was looking more for a comparison of the 2 tire sizes.
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Old 11-09-2013, 09:22 PM   #9
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Are you drag racing? AutoX? Just looking for a good time?

Wider tires up front are worse for drag racing, purchase thinner set, like skinnys for days you want to run on the strip.
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Old 11-09-2013, 09:28 PM   #10
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Are you drag racing? AutoX? Just looking for a good time? Wider tires up front are worse for drag racing, purchase thinner set, like skinnys for days you want to run on the strip.
Probably autoX. I may take it to the strip a few times, but the nearest one that I know of is an hour 15 minutes away, and I don't have time. Other than that, as a DD.
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Old 11-09-2013, 09:29 PM   #11
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Definitely go with the 275s all around then.
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Old 11-09-2013, 09:33 PM   #12
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Definitely go with the 275s all around then.
thanks, I'm gonna keep the 245's also, and I probably won't be getting the tires anytime soon, unless for christmas*cough*RTR Falken wheels*cough* .
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Old 11-09-2013, 09:38 PM   #13
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thanks, I'm gonna keep the 245's also, and I probably won't be getting the tires anytime soon, unless for christmas*cough*RTR Falken wheels*cough* .
I'm keeping my stock wheels also, but the rubber on those will be my drifting rubber
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Old 11-10-2013, 11:19 AM   #14
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I'm keeping my stock wheels also, but the rubber on those will be my drifting rubber
Andrew do not drift that car. -.-
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Old 11-10-2013, 12:37 PM   #15
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Andrew do not drift that car. -.-
Not drifting as in real drifting. More like open parking lot sliding around.
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Old 11-10-2013, 02:17 PM   #16
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It may be my " butt dyno" but after I put 275's on the car didn't feel as quick acelerating. Could be because of more resistence from new rubber? As far as winter grip in cold weather (below 40 degrees) it a little bettervthan stock all season tires. Still gets loose in throttle not feathered. As far as handling a gteat improvement. Expect to pay about $1200 to $1500 for a set of four.
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Old 11-10-2013, 02:29 PM   #17
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Definitely go with the 275s all around then.
Might have problems with tire rubbing wheel well on full lock turn.
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Old 11-10-2013, 02:32 PM   #18
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Might have problems with tire rubbing wheel well on full lock turn.
Idk about the new body style but in my 03 I'm running 275s all the way around and have not problem turning
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Old 11-10-2013, 02:39 PM   #19
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Might have problems with tire rubbing wheel well on full lock turn.
No rubbing problems on my 2011 gt.
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Old 11-10-2013, 02:40 PM   #20
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Idk about the new body style but in my 03 I'm running 275s all the way around and have not problem turning
. Have you looked behind the tire? I have 275/315 and my 275 have rubbed a shiny spot on my lower A arm.
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Old 11-10-2013, 03:22 PM   #21
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Might have problems with tire rubbing wheel well on full lock turn.
Not sure about the newer cars. But there is no tire rubbing on anything in my 01 with 275s up front and 285s out back. I check them periodically.

Oh, and i'm also lowered about 1-1.25" (3/4" lower springs, isolators taken out)
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Old 11-10-2013, 03:41 PM   #22
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No rubbing problems on my 2011 gt.
Have you lowered your car? I was told buy AM 1 1/2" lowered is max for 19" wheel with 255 tire. Bigger tire and lower than 1 1/2" rubbing may happen.
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Old 11-10-2013, 03:43 PM   #23
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Andrew do not drift that car. -.-
1+

That stock suspension and electronic rack probably won't take too many figure 8's and doughnuts before you break something.
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Old 11-10-2013, 10:43 PM   #24
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Have you lowered your car? I was told buy AM 1 1/2" lowered is max for 19" wheel with 255 tire. Bigger tire and lower than 1 1/2" rubbing may happen.
Not true I have 255's in the front with 20 inch rims and a near 2 inch drop , no rubbing , the backs are 295's/30 on 20's , the reason I went 255's in the front is because I used to have 275's all around on another car and driving around town was a nightmare every crevis and road imperfection moved my car around , not fun driving just a bit too wide. Now with my 255/35/20's I have no problem at all.
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Old 11-10-2013, 11:18 PM   #25
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1+ That stock suspension and electronic rack probably won't take too many figure 8's and doughnuts before you break something.
Technically it's not stock suspension, the Bullitts came with better suspension parts than the GTs
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Old 11-10-2013, 11:27 PM   #26
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Might have problems with tire rubbing wheel well on full lock turn.
You can run 305s all around on the new cars with the right offset. Offset is the key not tire size
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Old 11-11-2013, 07:52 AM   #27
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You can run 305s all around on the new cars with the right offset. Offset is the key not tire size
Correct and not just offset the hight of the tire plays a part too more than the width
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Old 11-12-2013, 02:14 PM   #28
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You can run 305s all around on the new cars with the right offset. Offset is the key not tire size
I wanna see a pic of a Stang with 305's all the way around. Has got to stick out of fender a good bit to keep from rubbing. Probably looks like a riced out 80's corolla in the front
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Old 11-12-2013, 03:38 PM   #29
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I wanna see a pic of a Stang with 305's all the way around. Has got to stick out of fender a good bit to keep from rubbing. Probably looks like a riced out 80's corolla in the front
No it has a complete track set up with coil overs made to fit wider tires all the way around. It looks beast actually.
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Old 11-12-2013, 03:44 PM   #30
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I seen 315s on the front in 5.0 mag. Can't remember if it had coil overs or different A arms.
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Old 11-12-2013, 04:03 PM   #31
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No it has a complete track set up with coil overs made to fit wider tires all the way around. It looks beast actually.
You saying stock fenders with no fender flares. 305 does not stick out and will not rub?
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Old 11-12-2013, 04:05 PM   #32
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You saying stock fenders with no fender flares. 305 does not stick out and will not rub?
With coil overs you can fit much larger wheel/tire combinations. That's one of their main purposes especially for track applications
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Old 11-12-2013, 05:12 PM   #33
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With coil overs you can fit much larger wheel/tire combinations. That's one of their main purposes especially for track applications
Right coil overs are small in diameter... I originally was talking stock suspension and lowering springs.
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Old 11-12-2013, 05:19 PM   #34
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Right coil overs are small in diameter... I originally was talking stock suspension and lowering springs.
All depends on the year. I could probably fit some 285s in front of my 01 if i roll the fenders and take away a bit of steering lock. Currently has 275s no issue.
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Old 11-12-2013, 05:37 PM   #35
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All depends on the year. I could probably fit some 285s in front of my 01 if i roll the fenders and take away a bit of steering lock. Currently has 275s no issue.
But that's a completely different car. Completely different suspension. Different sized wheels. Different wheel wells. Different lug pattern. Different wheel offset and backspacing. Non electric steering, and different section of the forum. Not trying to be rude or anything but we are talking about 10-14s.

---------- Post added at 06:37 PM ---------- Previous post was at 06:34 PM ----------

Quote:
Originally Posted by dobypaw3 View Post

Right coil overs are small in diameter... I originally was talking stock suspension and lowering springs.
With lowering springs and stock suspension 305s are never going to happen. You'll never clear the strut without completely custom wheels
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