nMeOnE

iTrader: (2)

Ok i'm going from 235/35/19 front 19x8.5 +28 and rear is 275/30/19 19x10 +43

Well i want to put 225/35/19 and 275/35/19 is that going to affect me much? any concerns i should worry about?

AK-47

iTrader: (3)

front won't, but rear might, depends on how much you lower it.

flowrider

iTrader: (9)

Your dropping from an OD of 25.5" to an OD of 25.2" in front and going up from 25.6" to 26.6" in the rear. So, you're going from a difference front to rear of .3" (larger in front) to 1.4" (larger in rear) in diameter. You'll have a definite rake. Is that what you want? I'm not sure if the speedo/odo comes of the front or wheel. If it's the rear, that's a definite difference.

Lou

nMeOnE

iTrader: (2)

what is rake? Also speedo comes from rear wheel

JoshIS408

iTrader: (11)

Rake is when your car is angle lower in the front and the rear sits higher. Reverse rake is when you have a tucked rear and say a 2 finger gap front.

ZinikLex21

275/35/19 is way too tall for the the IS and will throw off your speedo/odo 275/30 is the correct size in that width. Or you could go with a 255/35 if you want the 35 series in the rear, but the sidewall is not much different going from one size to the other. Remember that the series is a percentage of the width.

If you ran 225/35F 255/35R you would be almost identical with stock rolling diameter, which is already raked.

nMeOnE

iTrader: (2)

275/30/19 will also throw off your speedo by 2.0xx percent.

ZinikLex21

As long as it is within 3% it wont have any adverse affects on the speedo or odo.

SilvaIS350

iTrader: (3)

265/35/19 in the rear affect the speedo or odo?

ecr527

I have a 265/35/19 rear tire mounted on 19 x 9.5 wheel. It is the closest you'll get to the diameter of the stock wheels and tires, (in the rear) so if anything this would have the least affect on the speedo/odo. Be warned though that this is a very odd size for some reason, and the few brands that have this size available are usually expensive.

nMeOnE

iTrader: (2)

yea 265/35/19 are very odd sizes and pretty much 1.5 times the size of 275/30/19 and 275/35/19