I got my 2010 GTR with 25k miles about a year ago and it had the Toyo R888 tires on it with 315/30/20 and 285/35/20 on Forgeline 20x11 and 20x10 wheels. It needed tires so I got the new R888R's in the same size and now I start seeing posts about that being the wrong size and that I should of done a 325 instead of a 315 due to different rolling diameter that could cause ets issues. This makes me nervous, but I haven't seen any AWD lights or noticed any issues. I probably have only 1000 miles on them and I am just running FBO E85. Do you think this is cause for concern and I need to switch them out or should I just keep on eye on it and make sure next time to get the 325 size. I have read some people have no issues with the 315, but other have, so just wanted a few more opinions.
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Toyo R888R Tires
Posted 17 October 2020 - 02:35 PM
Posted 17 October 2020 - 02:49 PM
I don't think that means it's not wrong, it just means that the ets isn't strong enough to make the fronts slip. You could just be wearing out the ets.
I went to my tuner yesterday and wheel speeds from front to back were identical most of the time. Sometimes when excelerating hard they would maybe be 1km off from front to back. I am not sure what I am going to do now. Might order the 325's for a piece of mind.
Posted 22 October 2020 - 04:27 PM
Ordered the 325's today. Anybody need some 315's?
Over 15k miles using 325 rear and 285 front with no issues.
My FWD clutches were “refreshed” when I had my Billet gears 2-6 installed last year. Shep mentioned my FWD clutches showed very little And normal wear. Nothing looked like the 325/285 combo Was doing any damage.
- droptopp likes this
Posted 25 October 2020 - 06:27 PM
Old setups : more AMS motors than anyone I know - Alpha 9 w/ AMS 3.8, GTX3582R Gen II w/ AMS 4.1 billet crank, GTX3582R Gen II w/ AMS 4.0 big bore billet crank and of course FBO E85.
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