A7 vs A6s
#1
Rennlist Member
Thread Starter
A7 vs A6s
I just had a race at Laguna last weekend and these A7s with at least 3 more sessions of track time left on them, were slick as ice. my old used A6s i used to get from a buddy campaigning a 500hp mustang used to last me at least 8 sessions after he donated them to my racing efforts! These are hitting 8 session and are garbage. i had them at ACS last month and people were noticing how loose the car was . my other set that i bought new, cleaned that up, but they were not great and were horrible at Laguna. both around 8 sessions total now.
I've heard the A6s didnt last as long as the A7s, but maybe the A7s last longer but heat cycle out faster. any one have experience to share?
I've heard the A6s didnt last as long as the A7s, but maybe the A7s last longer but heat cycle out faster. any one have experience to share?
#2
Instructor
Join Date: Dec 2008
Location: Ridgefield, CT
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
That's surprising, I've heard the same as you. Maybe it's a one off, as I'm sure you know there are too many variables that could effect this, one set doesn't provide enough data. Subscribed for other comments.
#3
Rennlist Member
Thread Starter
I'm thinking the higher heat and wear of the super speedway banking might have accelerated not only the wear, but maybe the reduction of heat cycles available for decent grip.
#4
Rennlist Member
I would only use A6's when it was cool outside. Never when it was over 85 degrees. When they got too hot they are like ice and do not last long on my light car.
#5
Rennlist Member
Thread Starter
.
#7
I have found the A7's to be magic for the first HC or 2, but also found that they are really sensitive to how they are treated and if not run easy and allowed to cool per Hoosiers recs, they will not last. That would be my guess for what you have found as I have had mixed results depending on well I treated them from the start. Hoosier also told me that if the R7 gets in the right heat range, it can be as fast as the A7. Great tire, but I don't know about that one. Same with their 'recommended' pressures.
Trending Topics
#8
Race Car
Join Date: Apr 2005
Location: With A Manual Transmission
Posts: 4,728
Likes: 0
Received 2 Likes
on
2 Posts
I agree, the care of them is vital. I've had probably 30 sets of A6/7 since 2011. I've never had a set that wasn't usable to the cords that I got as stickers. However I bought some used ones to see if bigger sizes worked on my car, and even though the tire sizes fit, the tires were all over the place. Thought something was wrong with my car. I ran a 26.9 at Road Atlanta on a cord session of 22 hc A6's. I can't get the A7's to last anywhere near that long, they seem to cord at 16-17 hc on my car which is TT only and an occasional long DE session. If you overheat them, they can be trash afterwards. I never have because I don't race and long sessions are done in the mornings.
#9
Rennlist Member
Thread Starter
I agree, the care of them is vital. I've had probably 30 sets of A6/7 since 2011. I've never had a set that wasn't usable to the cords that I got as stickers. However I bought some used ones to see if bigger sizes worked on my car, and even though the tire sizes fit, the tires were all over the place. Thought something was wrong with my car. I ran a 26.9 at Road Atlanta on a cord session of 22 hc A6's. I can't get the A7's to last anywhere near that long, they seem to cord at 16-17 hc on my car which is TT only and an occasional long DE session. If you overheat them, they can be trash afterwards. I never have because I don't race and long sessions are done in the mornings.