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Old 11-27-2004, 08:55 PM   #1
erikIS
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Wider tires in the back..



Hey i was thinkin of givn my car some 225/60s in the back.. right now they are 205/60..

How would that work out? I'd like em to be wide at the back.. kinda reminds me of a nice E36 i saw back in Poland.
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Old 11-27-2004, 09:42 PM   #2
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I have had 245/40/zr17 or might have been 45's in the back with no problems on my 325i. But wider in the rear than the front does promote understeer if that matters to you.
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Old 11-28-2004, 01:21 AM   #3
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i dont recommend you run a 225/60 if u are currently running 205/60, for example, lets look at the ratio aspect of the E36 M3's the same goes with the E46's. the E36 M3's come with 225/45/17 in the front, and 245/40/17 in the rear, while the E46 M3's come with a 225/45/18 in the front and 255/40/18 in the rear. notice the wider the tire the lower the profile?!?! as the wider tire will change the overall drive/gearing of your car due to traction.
i think if u want to go wider i would recommend u go with 215/55, as thats the next width up, without drastically changing overall performance. good luck with your decision and hope that helped...
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Old 11-28-2004, 10:32 AM   #4
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im currently running 235/40/17 in the front and 255/40/17 on the rear of my 325i

this summer im rolling my fenders and going to try and fit 275/40/17
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Old 11-28-2004, 12:21 PM   #5
duffy325
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The thing I wonder though with going wider and wider, when do you get to the point of being too excessive. Many people say that 235/45/17 (or 235/40/17 I can't remember which aspect ratio) is the optimum size for the e36. And as you go wider, the extra drag can't help performance in the straight line, and probably is overkill in the corners.

So how much is too much?
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Old 11-28-2004, 02:03 PM   #6
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im not sure but a 275/40/17 would look ****in mean as hell on the back for street driving, track tires are a diffrent story, u gotta go with performance over looks
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Old 11-28-2004, 02:47 PM   #7
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Quote:
Originally Posted by RevShoT
im currently running 235/40/17 in the front and 255/40/17 on the rear of my 325i

this summer im rolling my fenders and going to try and fit 275/40/17
wow thats pretty wide in the rear. how wide a rim are u runnning? good luck trying to fit the 275 in the rear.

Quote:
Originally Posted by duffy325
The thing I wonder though with going wider and wider, when do you get to the point of being too excessive. Many people say that 235/45/17 (or 235/40/17 I can't remember which aspect ratio) is the optimum size for the e36. And as you go wider, the extra drag can't help performance in the straight line, and probably is overkill in the corners.

So how much is too much?
i think the width of your tire should depend on the width of your rim. based on the size of tire your running my guess is your running a factory 15" rim which is i think 6.5" or 7" wide. either way i do not recommend any wider than 215 with an aspect ratio of 55. any wider and your changing the geometry of the car because of grip relative to hp.

the width also depends on how you want your car to be set up. as stated earlier, a staggerd setup (wider in the rear than the front) would induce less oversteer, and keep the tail of the car from hanging out, while a non-staggerd (equal widths front to rear) setup is more prone to tail induced oversteer, basically a snap happy tail end. if you dont have insane amounts of hp there really is no need for a staggerd setup. But damn it looks cool! also wider tires in the rear usually mean wider rims. it is the extra width in the rim that gives it the look. you dont really notice the wider tire really.
so yeah there is such a thing as overkill.
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Old 11-28-2004, 03:45 PM   #8
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don't bother with wider tires now dude, winter is commin up. And we all know the laws of physics when it comes to wide tires on snow, ice and wet stuff...
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Old 11-28-2004, 04:06 PM   #9
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^^ yup tall and skinny is the name of the game for winter!

i have the ltw rims, 7.5" in the front and 8.5" in the rear

my friends camaro has an 8" rim and hes runnin a 295 so i know a 275 will fit without making the tread bubble
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Old 11-28-2004, 04:10 PM   #10
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damn 295 on a 8" rim?!?! damn...
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Old 11-28-2004, 04:34 PM   #11
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Quote:
Originally Posted by moregothanshow
wow thats pretty wide in the rear. how wide a rim are u runnning? good luck trying to fit the 275 in the rear.



i think the width of your tire should depend on the width of your rim. based on the size of tire your running my guess is your running a factory 15" rim which is i think 6.5" or 7" wide. either way i do not recommend any wider than 215 with an aspect ratio of 55. any wider and your changing the geometry of the car because of grip relative to hp.

the width also depends on how you want your car to be set up. as stated earlier, a staggerd setup (wider in the rear than the front) would induce less oversteer, and keep the tail of the car from hanging out, while a non-staggerd (equal widths front to rear) setup is more prone to tail induced oversteer, basically a snap happy tail end. if you dont have insane amounts of hp there really is no need for a staggerd setup. But damn it looks cool! also wider tires in the rear usually mean wider rims. it is the extra width in the rim that gives it the look. you dont really notice the wider tire really.
so yeah there is such a thing as overkill.
I run 17X8's with a 225/45/zr17, but when I had the 245's for the rear it was on a 17X8.5

My next set will be 235/40/zr17 i think.
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Old 11-28-2004, 05:53 PM   #12
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revshot r u dumb 275/40/17. omg if anything u would do like 245/45/17 but there is no way to make that fit without some mayor fender work. and that size tires would throw yr speedo off alot
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Old 11-28-2004, 06:29 PM   #13
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Quote:
Originally Posted by ///MsAniTy
revshot r u dumb 275/40/17. omg if anything u would do like 245/45/17 but there is no way to make that fit without some mayor fender work. and that size tires would throw yr speedo off alot
You are right for sure. You would have to go to a 275/35/17 and even then you would be a couple mm's off on the sidewall height. Matters to some people matters not to others I guess but I try to keep the total height as close as physically possible when making tire and wheel choices. Plus for that width you would want a 9.0 wheel probably and that is not happening with stock fenders I don't think.

Plus if your car was lowered and you didn't adress the camber, think of the waste of tires not being able to rotate or anything and wearing out the inside edge with 70% of your tire still being like brand new. This one of the main reasons I don't have a staggered set up, but more importantly like I said above, why would I want to promote understeer?

Last edited by duffy325; 11-28-2004 at 06:33 PM.
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Old 11-28-2004, 11:47 PM   #14
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personally i run 235/40/17 all around on 17x8 rims. My goal is to get 17x9 and run 255/40/17 all around, for autocross, for the track that is too wide i think

Plus, as said, the e36 chassis already promotes understeer, why increase understeer by running wider rear tires? Unless you're making a shitload of power, and only want to dragrace, keep the sizes even.
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