18's anyone?
#1
18's anyone?
Has anyone put on 18s?
I'm thinking about going to an 18in wheel/tire set up. There are plenty of wheel choices, however tires are a different story.
The challenging part is finding the right height combo as not to trip any ECUs.
Let me explain. The stock set up is:
F- 235/35/19 = 25.48"
R- 305/30/19 = 26.20"
Difference of 0.72" taller in the REAR
18" Option A:
F- 245/40/18 = 25.72"
R- 315/35/18 = 26.68"
Difference of 0.96" taller in the REAR
So option A yields a .24" taller rear. Will this trip the ECU/traction control on our AWD cars?
tks
I'm thinking about going to an 18in wheel/tire set up. There are plenty of wheel choices, however tires are a different story.
The challenging part is finding the right height combo as not to trip any ECUs.
Let me explain. The stock set up is:
F- 235/35/19 = 25.48"
R- 305/30/19 = 26.20"
Difference of 0.72" taller in the REAR
18" Option A:
F- 245/40/18 = 25.72"
R- 315/35/18 = 26.68"
Difference of 0.96" taller in the REAR
So option A yields a .24" taller rear. Will this trip the ECU/traction control on our AWD cars?
tks
#2
Its actually a lot worse than an ECU fault. With more than 3% tolerance, it can fry your differential. Do a search there are threads about it. I would look at the c4 setup that came with 18s for guideline, but do search a lot on the issue. I think someone here was running an 18 in setup for track?
#3
yes i hear you about the diff. others have mentioned this. when i look at the C4 set up the difference is very similar at 0.73 taller in the rear. So it seems like the need to stay close to this.
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