10.5 on the back of my cobra

[MysticialStang]

Im wanting to put 10.5 on the back of my cobra, need to know if it will work with wheel spacers! Yes it is IRS.

[Thomas91169]

i have 10.5's out back and as far as i can tell theres no spacers. Im running 10.5" 03 5spokers PC'd black. unless the spacer the previous owner used is black too, otherwise i dont see anything that looks like a spacer.

[lowflyn]

I'm running a small spacer to be on the safe side with 18x10's in the back.

[SpectorV]

every cobra is different. You not only have that going for you but the type of tire you run will be wider/more narrow depending on how they decide to measure their tire. Most seem to be able to run 315's without issue if they are lowered and have replaced the back IRS bolt with a button head bolt. You will have to give them a test fit. Each side can also vary... so one side may clear and the other may not... so you will need to check each side.

[MysticialStang]

Ive seen several cobras with 315's on the back, but ive never tried to get any info on it. I have seen post saying that they would work and some that said they wouldn't. I have been thinkin on it a while to start out I was going black FR500 10 in the back, now im thinking black bullits 10.5.

[nighthawk756]

Quote: Originally Posted by SpectorV every cobra is different. You not only have that going for you but the type of tire you run will be wider/more narrow depending on how they decide to measure their tire. Most seem to be able to run 315's without issue if they are lowered and have replaced the back IRS bolt with a button head bolt. You will have to give them a test fit. Each side can also vary... so one side may clear and the other may not... so you will need to check each side.

+1!! And the very reason I'm wanting to go 18's. No worries when stepping up to 18's. It gets the tire away from the bolts all together.

[MysticialStang]

Thanks a lot for the info, im going down to GA this weekend and picking up a set of Black Chrome FR500s. I finally found a place that doesn't have them on back order. Do you guys think they would look good on Mystic? They are 18s 9/10s im getting toyo proxies 265/35 295/35.

[SpectorV]

im not a black rim person, but rims in general are all about what the person buying them likes~

[lowflyn]

Quote: Originally Posted by nighthawk756 +1!! And the very reason I'm wanting to go 18's. No worries when stepping up to 18's. It gets the tire away from the bolts all together.

Mine were a little close for comfort when I put them on so I'm running a spacer in the rear now...couldn't fit a finger between the wheel and the bolt without the spacer.

[SpectorV]

^^ I would install the smaller head bolts just to be safe as they are really cheap. Thats a bit of extra insurance.

[nighthawk756]

Quote: Originally Posted by lowflyn Mine were a little close for comfort when I put them on so I'm running a spacer in the rear now...couldn't fit a finger between the wheel and the bolt without the spacer.

What size tire are you running?

[lowflyn]

295/35-18 BFG on a 18x10 wheel.

[nighthawk756]

Quote: Originally Posted by lowflyn 295/35-18 BFG on a 18x10 wheel.

Hmmm, weird. I've talked to a bunch of folks that said they didn't have a problem once they went 18's. Even with the suspension unloaded they said that it wasn't even close.

Strange.

[avmech]

what bolt are you guys talking about, i just ordered 315 nittos. havent fitted them yet will tommorow hopefully. its going on a 04 cobra on the stock 17 cobra rims, ill let you know if they fit with out any spacers.

[bbunt302]

Quote: Originally Posted by avmech what bolt are you guys talking about, i just ordered 315 nittos. havent fitted them yet will tommorow hopefully. its going on a 04 cobra on the stock 17 cobra rims, ill let you know if they fit with out any spacers.

315s are gonna be waaaay too wide for the stock 17x9 wheels. Even though Nittos run more narrow than other tires, they don't run quite that narrow. I had 285 Nitto 555s on a 18x9 wheel and they were just a little too wide. I can only imagine what 315s will be like.

[SpectorV]

the bolt we are talking about it located on the back side of the tire. If you look you will see a bolt head sticking out and not to far from the tire. Its where the back of the IRS bolts up.

this isnt the best pic but it shows the bolt behind the shock

[PureVenom]

Quote: Originally Posted by bbunt302 315s are gonna be waaaay too wide for the stock 17x9 wheels. Even though Nittos run more narrow than other tires, they don't run quite that narrow. I had 285 Nitto 555s on a 18x9 wheel and they were just a little too wide. I can only imagine what 315s will be like.

Actually, the drag radial nittos only stick out about 1/2" from a 9" rim. They aren't a true 315. This is not true of the regular street radials...for some reason those hold true to size where as the 315 drag radials don't. They are more like a 295 and it is very apparent when you lay one on its side next to a stock 275 and another brand 315. It is just barely bigger than the stocker, and about a inch smaller than the other brand 315.

And, the 315 nittos will not need the spacer. I have them on my car with 10.5" rims and there is about 1/4-1/2" of space between the tire and the stock wide head bolt and no spacer. Once you get into the other brands, then the 315's actually become 315's and they will not fit very well with the stock bolt.

[avmech]

thanx, man you kats have been more then help full, ill be asking alot of questions so you might get sic of hearing from me. doing the full pully kit and double bypass cooler at the end of the week.

[SpectorV]

drop the rear end and do derlin bushings with an alum diff brace when you get time, and a BF irs brace.

[avmech]

I have heard that the irs brace causes more damage then good. heard it was eaisier to replace the out put shafts with upgraded ones when they break, and the diff brace tends to blow every thing out the back.