New OEM Sized 20" Hoosiers for GT3 (WARNING PIC HEAVY)
#16
Good stuff. Any word on if and when A7s will be availability these sizes?
#17
Rennlist Member
Thanks Dave, good stuff!
a little off topic, I’m running 295/30/10 345/30/19 R7 on RS
even with -3.3 camber front I corded the outer edge after 8 20 minute sessions yesterday. That’s flipping wheels side to side. Wear is good across the tire.
the rears wear great.
a little off topic, I’m running 295/30/10 345/30/19 R7 on RS
even with -3.3 camber front I corded the outer edge after 8 20 minute sessions yesterday. That’s flipping wheels side to side. Wear is good across the tire.
the rears wear great.
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Samson911 (08-14-2020)
#18
Thanks Dave, good stuff!
a little off topic, I’m running 295/30/10 345/30/19 R7 on RS
even with -3.3 camber front I corded the outer edge after 8 20 minute sessions yesterday. That’s flipping wheels side to side. Wear is good across the tire.
the rears wear great.
a little off topic, I’m running 295/30/10 345/30/19 R7 on RS
even with -3.3 camber front I corded the outer edge after 8 20 minute sessions yesterday. That’s flipping wheels side to side. Wear is good across the tire.
the rears wear great.
I ran New 20” Hoosiers with a 265 fr and 335rear setup at NCM about 3 weeks ago in my.1 GT3. I was super impressed with performance. I managed a 214.1 lap my first time at NCM in the GT3. Unfortunately I don’t have any laps at NCM to compare to the MSC2’s, but several friends said that was a good lap time. I will have a chance to run them at Road Atlanta in 2 weeks and can compare lap times. I had very little rubbing of the fronts at NCM with the 265 fr setup.
#19
Rennlist Member
Thanks
i go out 22 to get to about 32 at the end of the session.
Pressures keep climbing as I cook the tires, trying to go faster with tires going off.
so it kinda depends, out lap 22 1st lap 25 2nd lap 28 and the first flyer usually makes them 30+
Ill see if I can go higher, I maybe confusing high PSI grip drop off with fried tires.
Look forward to Road Atlanta laps.
I only took purple here once but couldn’t get comfortable on iffy tires. Need to go back...
i go out 22 to get to about 32 at the end of the session.
Pressures keep climbing as I cook the tires, trying to go faster with tires going off.
so it kinda depends, out lap 22 1st lap 25 2nd lap 28 and the first flyer usually makes them 30+
Ill see if I can go higher, I maybe confusing high PSI grip drop off with fried tires.
Look forward to Road Atlanta laps.
I only took purple here once but couldn’t get comfortable on iffy tires. Need to go back...
#20
Pro
Thread Starter
Thanks Dave, good stuff!
a little off topic, I’m running 295/30/10 345/30/19 R7 on RS
even with -3.3 camber front I corded the outer edge after 8 20 minute sessions yesterday. That’s flipping wheels side to side. Wear is good across the tire.
the rears wear great.
a little off topic, I’m running 295/30/10 345/30/19 R7 on RS
even with -3.3 camber front I corded the outer edge after 8 20 minute sessions yesterday. That’s flipping wheels side to side. Wear is good across the tire.
the rears wear great.
I ran New 20” Hoosiers with a 265 fr and 335rear setup at NCM about 3 weeks ago in my.1 GT3. I was super impressed with performance. I managed a 214.1 lap my first time at NCM in the GT3. Unfortunately I don’t have any laps at NCM to compare to the MSC2’s, but several friends said that was a good lap time. I will have a chance to run them at Road Atlanta in 2 weeks and can compare lap times. I had very little rubbing of the fronts at NCM with the 265 fr setup.
Best Regards,
Dave
#21
Rennlist Member
I have had same issues with my MSC2’s in the past. Some tracks like Barber are rough on left front. How were your tire pressures? I have prematurely corded outer edges by running my pressures on the low side. It improved bringing my hot pressures up about 3 psi in the front from 31-34.
I ran New 20” Hoosiers with a 265 fr and 335rear setup at NCM about 3 weeks ago in my.1 GT3. I was super impressed with performance. I managed a 214.1 lap my first time at NCM in the GT3. Unfortunately I don’t have any laps at NCM to compare to the MSC2’s, but several friends said that was a good lap time. I will have a chance to run them at Road Atlanta in 2 weeks and can compare lap times. I had very little rubbing of the fronts at NCM with the 265 fr setup.
#22
Rennlist Member
"Yeah, Hoosier has recommended to start quite a bit higher cold psi, and looking for closer to 38psi hot. I'm also a big fan of switching tires side to side, I typically will do 2 sessions, and then swap side to side for next 2 sessions.
Thanks, me too! Goes in for alignment Tuesday and I'll be running it this Saturday/Sunday!"
Let us know your alignment settings when you get it done too.....I'm curious to see how much camber is needed for the R7's - have fun this weekend!
#23
Thanks Dave, good stuff!
a little off topic, I’m running 295/30/10 345/30/19 R7 on RS
even with -3.3 camber front I corded the outer edge after 8 20 minute sessions yesterday. That’s flipping wheels side to side. Wear is good across the tire.
the rears wear great.
a little off topic, I’m running 295/30/10 345/30/19 R7 on RS
even with -3.3 camber front I corded the outer edge after 8 20 minute sessions yesterday. That’s flipping wheels side to side. Wear is good across the tire.
the rears wear great.
"Yeah, Hoosier has recommended to start quite a bit higher cold psi, and looking for closer to 38psi hot. I'm also a big fan of switching tires side to side, I typically will do 2 sessions, and then swap side to side for next 2 sessions.
Thanks, me too! Goes in for alignment Tuesday and I'll be running it this Saturday/Sunday!"
Let us know your alignment settings when you get it done too.....I'm curious to see how much camber is needed for the R7's - have fun this weekend!
I rubbed a lot more with 265 MSC’2 until I rubbed a small hole with Michelin’s. The Hoosiers hardly rub at all. Some of the decreased rub may be due to the already present wear on the inner left front fender liner created by the 265 Michelin’s
#24
Pro
Thread Starter
Camber settings are max factory settings which I believe are 2.25fr and 2.5r.
I rubbed a lot more with 265 MSC’2 until I rubbed a small hole with Michelin’s. The Hoosiers hardly rub at all. Some of the decreased rub may be due to the already present wear on the inner left front fender liner created by the 265 Michelin’s
I rubbed a lot more with 265 MSC’2 until I rubbed a small hole with Michelin’s. The Hoosiers hardly rub at all. Some of the decreased rub may be due to the already present wear on the inner left front fender liner created by the 265 Michelin’s
Best Regards,
Dave
#25
Rennlist Member
Thumbs up for the good info!
I learned that it's important to look at the manufacturer's spec sheet when trying out new tires. The discrepancies can be YUUUUGE esp. as it comes to race rubber. Case in point, Yokos are often 10% wider than Pirellis for the same "305" section rubber, and Mich quotes that size as a "31" even though it's narrower than the Pirelli 305...
I learned that it's important to look at the manufacturer's spec sheet when trying out new tires. The discrepancies can be YUUUUGE esp. as it comes to race rubber. Case in point, Yokos are often 10% wider than Pirellis for the same "305" section rubber, and Mich quotes that size as a "31" even though it's narrower than the Pirelli 305...
#26
If you could ask them when this would be available that would be much appreciated. I'm ordering wheels; I'll get 20s if A6s in the correct sizes are available.
#27
Rennlist Member
WARNING: DOT labeled Hoosier Racing Tires meet Department of Transportation requirements for marking and performance only and are NOT INTENDED FOR HIGHWAY USE. It is unsafe to operate any Hoosier Racing Tire, including DOT tires, on public roads. The prohibited use of Hoosier Racing Tires on public roadways may result in loss of traction, unexpected loss of vehicle control, or sudden loss of tire pressure, resulting in a vehicle crash and possible injury or death.
#29
Rennlist Member
I run 265 & 325;s on my gt3 and lately I have been trying all different pressures from low 30's to 40 hot. My findings have been confusing to say the least I have run best laps at opposite ends of the range, we also looked at tire temps trying to level temps across the tire. For me it comes down to what type of track I'm running and adjusting sway bars to manage front tire wear on outer edge.
#30
Pro
Thread Starter
I run 265 & 325;s on my gt3 and lately I have been trying all different pressures from low 30's to 40 hot. My findings have been confusing to say the least I have run best laps at opposite ends of the range, we also looked at tire temps trying to level temps across the tire. For me it comes down to what type of track I'm running and adjusting sway bars to manage front tire wear on outer edge.
Best Regards,
Dave