Yonash

hell of a good idea IMO. in fact, i think i'll "borrow" the idea come new tire time haha. keep the stock size out back and go for the 245/40R18 out front. should keep the diameters close enough to not goof anything up (is there anything that could get goofed up by this? ABS or TCS or something?), and give us some good grip out front, while keeping the rolling resistance down out back, maybe even step the rear down to a 215? i suppose i have some time to kill before i HAVE to make that decision. see how other people's experiments pan out, as far as fitting the larger sizes, running different sizes front to back, etc. if no one else has any problems, i'm all over it. i've only got 7400 miles, and i've heard these tires are good for about 30K or so.

AaronSS

You can vary the aspect ratio (I think that's the right term) so that you get as close to the same diameter as possible between the tires. There are tire size calculators everywhere for you to fool around with. The 225's in the rear were still one size up on the Sentra, and the 235's were plus two. I like the way it made the sidewalls bulge out in the front. Looked mean and muscular as hell.

I don't know if I'd go with 245's and 215's. Having that much difference in contact patch might make you oversteer if you got aggressive in the twisties. That, and it'd be really obvious to the casual observer. That's almost an inch and a half more meat in the front, so you'd definitely have the drag racer look.

But it's not like your ride is a sleeper anymore anyway with the Wilwoods.

Yonash

haha, fair enough! we shall see. might just go 245 front and 225 rear. as i said, i've got time to figure it out.

crazysteve

the 245/40/18 are pretty close to the same height as the stock 225/45

Yonash

thats precisely why i'm looking at that size, it's almost identical. such a slight discrepancy in size front to rear shouldn't cause a hassle with TCS or ABS or anything, right? can a discrepancy cause trouble for any of those types of systems? like say you've got a fairly significant diameter difference, say like 1/2", are those systems configured in such a way it could cause problems? does anyone know?

AaronSS

Stop being a wuss and be the guinea pig. If nothing breaks, I'll do it too.

ZTony8

FWIW,Pontiac did this very thing on the Bonneville GXP a couple of years back.

Yonash

jerk lol if i had the money to do it now, i would, believe me haha. you get to guinnea pig this one, i bought the expensive (but oh so SEXY) brakes, remember?