Did a bit of data logging, tire review
#1
Did a bit of data logging, tire review
I finally got the chance to do some 0-100 pulls today in rural northern GA after getting my ecu back and wanted to provide some feedback on the Yokohama AD08R that I was convinced into by I8ABMR.
These tires are STICKY! On the first pull the back end got a little sloppy after going from 1st to 2nd, but after that, they stuck to the asphalt like glue. Granted it was almost 80 here today, and I know that helped, but i know when I had PSS and AS3 on going WOT from 0 caused a helluva lot more spin with trac completely turned off.
I'll be putting them through the paces at AMP early April and will add some more feedback on Tammer's already stellar review of them.
These tires are STICKY! On the first pull the back end got a little sloppy after going from 1st to 2nd, but after that, they stuck to the asphalt like glue. Granted it was almost 80 here today, and I know that helped, but i know when I had PSS and AS3 on going WOT from 0 caused a helluva lot more spin with trac completely turned off.
I'll be putting them through the paces at AMP early April and will add some more feedback on Tammer's already stellar review of them.
#2
Lexus Fanatic
Very cool buddy !! I noticed the same thing. They actually need to warm up, although they warm up fast. The first corner of the first lap I went out with them on I threw the rear out and was like WTF!! These are 295's!! But as I went down the straight we warmed up with some weaving and I could not get them to break loose after. The craziest thing for me was being able to floor the car while making a turn ( not 90 degree) from a stand still and they stick. No TCS light and no wheels spin. It really made the car feel balanced .
The main thing I noticed too is that they do not like oem pressure of 36 psi cold. I would bring them down to 33 or even 32 cold. The tire is so square and the sidewall is so firm that it can take it and prefers it. The SCCA Viper guys and PCA all recommend lower pressures for max grip and they were right .
Glad you tried them and I have to say I felt awful that I told you to use those Michelins at that recent event and they came apart at the sidewall. Sorry buddy. I never expected that. The AD08R will get noisy after 50% wear but with the exhaust its no big deal. The yoko is more consistent as it ages . They will stick down to the indicator
Chuckwalla next week ,AMP the weekend after, and WHP main track 2 weeks after that. 3 track days coming up in the next 4 weeks. Super excited !!
The main thing I noticed too is that they do not like oem pressure of 36 psi cold. I would bring them down to 33 or even 32 cold. The tire is so square and the sidewall is so firm that it can take it and prefers it. The SCCA Viper guys and PCA all recommend lower pressures for max grip and they were right .
Glad you tried them and I have to say I felt awful that I told you to use those Michelins at that recent event and they came apart at the sidewall. Sorry buddy. I never expected that. The AD08R will get noisy after 50% wear but with the exhaust its no big deal. The yoko is more consistent as it ages . They will stick down to the indicator
Chuckwalla next week ,AMP the weekend after, and WHP main track 2 weeks after that. 3 track days coming up in the next 4 weeks. Super excited !!
#3
Lexus Test Driver
iTrader: (1)
Thanks guys.. This is good info. I'm sticking (no pun intended) with the Michelin PSS this year since my 255/35 front tires are still fairly new, but the rears are pretty much done (not to mention, one is plugged from a humongous screw I "lucked" into). I just picked up my new 275/30 rears, which should improve on the old 265s. With that said, I'll likely need to replace all four before any track time in 2017, so I'll definitely consider the Yokos.
-Mike
-Mike
#4
Lexus Fanatic
I am going to try the Michelin Pilot Sport Cup 2 on the next round. Expensive but I do find that with tires you ABSOLUTELY get what you pay for. My concern is the Michelin girth. They are wider than the AD08R fit. If it rubs I will be going back to the Yokos. They are perfect, I just would like to see if I can ditch the noise.
#5
Instructor
iTrader: (5)
I am going to try the Michelin Pilot Sport Cup 2 on the next round. Expensive but I do find that with tires you ABSOLUTELY get what you pay for. My concern is the Michelin girth. They are wider than the AD08R fit. If it rubs I will be going back to the Yokos. They are perfect, I just would like to see if I can ditch the noise.
#6
Hey, does anyone have any thoughts on the effect that heavier tires have on acceleration? I just purchased a set of Bridgestone S-04s yesterday due to inner tire wear on the fronts (also just got USRS from RR) and like them but I noticed on the Tire Rack website the the Michelin PSS is one of the lightest tires. They are 4-5 pounds per tire lighter than the S-04s and 3-4 lighter than the AD08Rs. I am not concerned with the 20lbs that they add to the car, but rather the increased torque required to rotate them. Some forums have stated a 1:6 ratio of effect, meaning that as far as acceleration is concerned adding one pound to the tire/wheel is like adding 6 to the car. So if my tires are 20lb total heavier, it is like adding 120lb to the car. Does anyone have experience with lap times, drag strip times, etc.?
#7
Pole Position
Interesting I didn't know the PSS are one of the lightest or the lightest tire is it's size class?? Maybe one of the reasons among many that they are always sold out in certain sizes anyway.
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#9
Lexus Fanatic
Hey, does anyone have any thoughts on the effect that heavier tires have on acceleration? I just purchased a set of Bridgestone S-04s yesterday due to inner tire wear on the fronts (also just got USRS from RR) and like them but I noticed on the Tire Rack website the the Michelin PSS is one of the lightest tires. They are 4-5 pounds per tire lighter than the S-04s and 3-4 lighter than the AD08Rs. I am not concerned with the 20lbs that they add to the car, but rather the increased torque required to rotate them. Some forums have stated a 1:6 ratio of effect, meaning that as far as acceleration is concerned adding one pound to the tire/wheel is like adding 6 to the car. So if my tires are 20lb total heavier, it is like adding 120lb to the car. Does anyone have experience with lap times, drag strip times, etc.?
I barley got 7k on my PSS in the rear. I see the same where we basically go through rears twice as fast as the front . Rears are bald and the front literally look new.
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