Gtr Wheels

[tacker]

Guys,

Quick question about having difference wheel circumfence between back and front wheels!

Is 20mm diff too much and will it upset the 4WD system? I would think that 20mm would be like a set of new boots on the front and used on the rear.

[heller44]

I had new 235/45/17's on the front and old 235/45/17's on the back and attessa was having a fit trying to handle it. torque surging very noticeable at 80+km/h.

[neil_se]

I had exactly the same experience as above.

[Beer Baron]

yeah 20mm is too much in my experience. but there is one way to find out for sure...

[tacker]

hmmm bugga!

looks like i will out with the tape measure checking out some different profiles then. still its quite strange that less then 1 mm of tread wear will get you about 20mm of circum difference. Which should happen with normal wear between front and rear.

I think a 245 x 45 x 18 will be close to a 285 x 35 x 18

[32R]

This is a good guide for comparison

http://www.1010tires.com/TireSizeCalculato...p?action=submit

cheers

[tacker]

ta for that.

Looks like a 285x35x18 is 2062mm and a 245x40x18 is 2052mm

So 285 mich pilot sport on rear and 245 bridgestone re55s on the front

So about 5 minutes with the 4WD fuse pulled and they will be about the same :-)

[Beer Baron]

sorry, I didn't read properly. 20mm circumference shouldn't be a problem

[tacker]

lol just like 20mm mades a big diff in the package stakes

Cheers BB

just measured they wheels on the car and they do have 20mm diff in fact the difference between the largest and smallest was 32mm, although they were on different sides. I dont remember having any issues with the 4wd system flashing at me or lighting up.

Worth a try i think.