Hoosier A6 versus Kumho V710's, Which one better for loose asphalt for AX? Options

[nine14cats]

We in Northern California appear to have lost our best AX site for the short term at Alameda Naval station. Nice large grippy concrete that provides great traction. As the majority of events were held there over the past several years, I had decided next year to try out the Hoosier A6's to match the Hoosier R6's I have for the track.

We will now be rotating around the region at more traditional venues such as Candlestick Park in San Francisco. The stadium parking lot does offer elevation changes, but the surface is asphalt that is often torn up and full of glass and sharp metal. Also, the surface is cooler in temperature than Alameda.

The change in sites has lead me to re-evaluate if I should try the Kumho V710's or even run the Victoracers or V70A's. Does anyone have first hand experience running these tires on asphalt? I don't want to use the A6's or the V710's and tear them up if they have trouble with the asphalt and/or loose shittage of a football stadium parking lot versus smooth concrete.

Thanks in advance for the help.

Bill P.

[grantsfo]

I have run Hoosier A5's, Kumho Victoracers and 710's at all the local venues except Candlestick.

I could drive the A5's very quickly once they were warm. Funny thing about Hoosiers it always seemed to take a few corners before they really began to stick (much more noticeable than other tires I have run). When Hoosiers were warm they stuck better than anything. One consideration is the Hoosiers pickup a ton of crap when run at places like Marina - maybe that would be a factor at Candlestick? 710's seem to stick better from very beginning of the run, but don't offer that incredible Hoosier grip. The 710's still pickup garbage, but it seemed to me that they didn't pickup as much as the Hoosier A5's.

Victoracers for me were substandard AX tires when compared to the DOT R slicks. I doubt any amount of broken surface is going to make them superior over the A6 Hoosier or the 710. Victoracers were impossible to get warm on cold days - (70 to 80 degree tire temps). I run same size 710s and they shoot into over 100 degree range fairly quickly with same suspension setup.

I think more important with our venues is finding tire that offers best heat characteristics on cold foggy days. Some of those cement surfaces suck the heat out of tires. The tire I found to work best on real cold surfaces was the old Yoko A032R Softs. They never would offer the grip of the 710 or the A5, but they stuck decently from the first gate to the last on cold days. I'm surprised a tire manufacturer hasn't made a cold weather AX tire - something that doesnt need as much heat to offer grip, but would not tolerate track surfaces much over 75 to 80 degrees.