IS_250

iTrader: (2)

just wanted to know if anyone could possibly tell me what the max offset and width combinations that can be used on the 06 IS 250/350. I have narrowed the closest tire in 19" to 225/35/19 Front and 265/35/19 or 275/30/19 Rear. I might just have to bite the bullet and have a local tire shop test fit some wheel/tire combos.

rominl

iTrader: (4)

well you are one of teh very few new owners out there, so i really don't know if we could of much help.....

i am a bit hesitant on 275 in the back though, can you fit that wide of a tire/rim on the new IS? if so, cool

SoCalSC4

I had some up close & personal time with the IS 350 last weekend.
Lexus has done a funny thing and is using a 225/40-18 front tire and a 255/40-18 rear tire.

This means you'll need to use a taller rear tire to keep the ABS and TCS functions happy when using a plus size. The G35 Coupe and 350Z are similar to this. The OE rear wheels look lost- I am certain a 275 will fit on the rear- maybe wider.

I ran a few numbers:

OE front:
225/40-18 = 25.1" diameter

Front plus size:
225/35-19 = 25.2" diameter (.1" taller than OE, use with 265/35-19 if you can find it)
235/35-19 = 25.5" diameter (.4" taller than OE, use with 275/35-19)
245/35-19 = 25.8" diameter

245/30-20 = 25.8" diameter (.7" taller than OE, use with 285/30-20 rear)


OE rear:
255/40-18 = 26.0" diameter

Rear Plus size
255/35-19 = 26.0" diameter
265/35-19 = 26.3" diameter
275/35-19 = 26.6" diameter

285/25-20 = 25.6" diameter (too short)
285/30-20 = 26.7" diameter (.7 taller than OE, use with 245/30-20 front)

I need to get one of these cars for a test-fit, then we will know more.

chuckb

does the new IS come with a full size alloy spare? if so, look on the back of wheel it will say the offset and width. Are the rear rims wider than fronts?

rominl

iTrader: (4)

nop, donut spare

and bob, so this is better than, coz' on the 1st gen IS, 275 was a little nightmare

IS_250

iTrader: (2)

im not too concerned with the tire sizes, but width and offsets are what im really worried about. i know that the 1g IS needed high offsets to fit a wider tire/wheel combo. wish i was on the other coast... im having a hard time finding someone that doesnt mind wasting time to test fit. thanks for all your input, maybe someone out there will chime in... or better yet have some pics.

chuckb

I'm seeing alot of new IS with G spiders