Hoosier R7 vs. A7?
04-25-2016, 06:24 PM
#31
Rennlist Member
Yes, the Z215 C51 is a fantastic tire and is faster...and also lasts a long time. Sadly their supply chain into the US is "sporadic" at best.
04-25-2016, 06:34 PM
#32
Rennlist Member
I have run A6 and A7 and there are more predictable and less sensitive to higher to pressure than the R6 or R7 in my 964 H car. I am now running 30 psi hot and the wear is much better..BUT the Hankooks ar two seconds a lap faster faster so it is good bye to Hoosier unless the supply of Handkooks dries up by July.
04-25-2016, 06:39 PM
#33
Rennlist Member
snip from your website:
Dave Scott, spent many years racing professionally in Grand Am, World Challenge, and ALMS,
all i remember is one grand am race where you were a ping pong ball at the start and then your brakes failed and instead of downshifting, you coasted to the sand trap. so, i guess your method is safe if you have a sand trap to save you! ha haha :roflmo:
it's the projection that keeps you going... carry on my big mouthed friend!
I think it's its time we race! High Plains race way! i was game before and game now. any car, any track we haven't frequented!
04-25-2016, 06:45 PM
#34
Rennlist Member
Yes Mark, really. "All you remember"? LMFAO Says it all right there. Hilarious.
Last edited by Veloce Raptor; 04-26-2016 at 08:29 AM.
04-25-2016, 06:49 PM
#35
ProCoach's summary is consistent with our personal experience and is a good summary of what our reported customer experiences are as well on the 1000's of DOT Hoosier tires we sell every year.
This has been my experience.
On a number of heavy GT cars that require DOT-R rubber per the rules, the A7 works extremely well as a qualifying tire (maximum performance, quick warmup and pressure stabilization, ideal for autocross) with much more TRACK durability than the old A3 and A6 variants.
As a matter of fact, in SCCA, my clients preferred the A7's to run sprint races in the car, as long as the ambient temps were below 80 degrees.
We did find the performance to be severely compromised after a short time at higher temperatures, but this tire surprised me with its (relative) durability. For those with no budget limitations, you can see a small performance improvement with the A7's over the R7's. However, the HC life (at 90-100% performance) is between 20-40% lesser with the A7 than the R7.
For you, K-Man, the number of laps you are now putting on the car make the R7's a better choice, but if you ever have a "solo"weekend without the kids before it gets too hot, indulge yourself and try a set. You'll like it!
On a number of heavy GT cars that require DOT-R rubber per the rules, the A7 works extremely well as a qualifying tire (maximum performance, quick warmup and pressure stabilization, ideal for autocross) with much more TRACK durability than the old A3 and A6 variants.
As a matter of fact, in SCCA, my clients preferred the A7's to run sprint races in the car, as long as the ambient temps were below 80 degrees.
We did find the performance to be severely compromised after a short time at higher temperatures, but this tire surprised me with its (relative) durability. For those with no budget limitations, you can see a small performance improvement with the A7's over the R7's. However, the HC life (at 90-100% performance) is between 20-40% lesser with the A7 than the R7.
For you, K-Man, the number of laps you are now putting on the car make the R7's a better choice, but if you ever have a "solo"weekend without the kids before it gets too hot, indulge yourself and try a set. You'll like it!
04-25-2016, 07:23 PM
#36
Rennlist Member
Yes Mark, really.
"All you remember"? LMFAO Says it all right there.
As I indicated earlier in this thread, your behavior pattern is 100% predictable and 100% sociopathic.
Carry on with your thorough self humiliation!
Whatever is going on in your life driving this, seek help.
"All you remember"? LMFAO Says it all right there.
As I indicated earlier in this thread, your behavior pattern is 100% predictable and 100% sociopathic.
Carry on with your thorough self humiliation!
Whatever is going on in your life driving this, seek help.
Tell you what. from now on.. I'll write my responses in smaller sentences and use smaller words so you can follow.
Have fun bench racer!
Hey, besides that one race, how many races did you ever run..... 2-3? not counting lemons races or Chumpcar.
Last edited by mark kibort; 04-25-2016 at 07:43 PM.
04-26-2016, 10:36 AM
#37
Rennlist Member
I have run A6 and A7 and there are more predictable and less sensitive to higher to pressure than the R6 or R7 in my 964 H car. I am now running 30 psi hot and the wear is much better..BUT the Hankooks ar two seconds a lap faster faster so it is good bye to Hoosier unless the supply of Handkooks dries up by July.
Pete, What tire pressures (front to back) do you find ideal for your 964 with Hankooks?
04-26-2016, 11:52 AM
#38
Racer
I am still working with the Handkook pressures but I am leaning toward 30 psi hot all the way around..same as A-7 Hoosiers. For the weight of my car(2910 including me) and way I drive, 30 psi seams to be the sweet spot but I go out at 20-22 psi first thing in the morning. Unlike me, now I have to warm up the tires...
04-26-2016, 12:42 PM
#39
Rennlist Member
I am still working with the Handkook pressures but I am leaning toward 30 psi hot all the way around..same as A-7 Hoosiers. For the weight of my car(2910 including me) and way I drive, 30 psi seams to be the sweet spot but I go out at 20-22 psi first thing in the morning. Unlike me, now I have to warm up the tires...
04-26-2016, 03:39 PM
#41
Rennlist Member
I am still working with the Handkook pressures but I am leaning toward 30 psi hot all the way around..same as A-7 Hoosiers. For the weight of my car(2910 including me) and way I drive, 30 psi seams to be the sweet spot but I go out at 20-22 psi first thing in the morning. Unlike me, now I have to warm up the tires...
I have never run them them that low and have been shooting for around 36-37 in my 968 which is also ~2900 lbs. Will try those pressures at WG next month. Thanks for the feedback Pete.
04-26-2016, 03:55 PM
#43
Rennlist Member
04-26-2016, 06:25 PM
#45
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-Peter Krause
www.peterkrause.net
www.gofasternow.com
"Combining the Art and Science of Driving Fast!"
Specializing in Professional, Private Driver Performance Evaluation and Optimization
Consultation Available Remotely and at VIRginia International Raceway