Tire size question

Originally Posted by jmatta

ET40 on the rear may cause some outside rubbing if you go wide on the tire. You may need to increase negative camber to offset or roll the fenders. My rears are ET47 with 275/40/18 with neg 2.5* camber.

So can you give me the new tire sizes for the front and rear, what you said just confused me.

[blackONblack]

Originally Posted by blkboxster

So can you give me the new tire sizes for the front and rear, what you said just confused me.

For your rear rim being so wide, so smallest width you can use that will stretch and fit is 265/35. If you increase the width (275-285) then you will have to decrese the sidewall hieght (275/30 or 285/25). But as I stated before if you go much wider in the rear you will have fender/strut rub issues. Your front rims are the same width as stock rims so there is no difference there. 225/40 front will fit fine and fill out the wheel well without spacers.

Front 225/40
Rear 265/35 or 275/30.

[mtch]

Originally Posted by blackONblack

For your rear rim being so wide, so smallest width you can use that will stretch and fit is 265/35. If you increase the width (275-285) then you will have to decrese the sidewall hieght (275/30 or 285/25). But as I stated before if you go much wider in the rear you will have fender/strut rub issues. Your front rims are the same width as stock rims so there is no difference there. 225/40 front will fit fine and fill out the wheel well without spacers.

Front 225/40
Rear 265/35 or 275/30.

I have an 03 S with the Carrera wheels (8x18 & 10x18). I replaced the rears (265/35 stock) this summer with 275/35 tires with no problems. No camber adjustments, everything else stock. I live in the mountains, and have done 2 DEs at VIR so I've driven pretty hard many times since the change. No issues with that size.

One thing to consider is the front / rear size difference balance. I noticed the difference that came with the increased front to rear offset. Rear held tighter, (more oversteer at speed) which is good in most cases but not as good in a few isolated instances. Just something to consider.