monroepaul

what other r compound tire will give similiar performance to R6s but more durability?

gonzalezfj

Better grip = shorter life

You will get all kinds of recommendations, but in the end, the above applies.

Frank Gonzalez

Solofast

I've always used the A6's and V710's.

What Frank said has been my experience...

Curious tho, since V710's aren't quite as fast as A6's and neither are R6's, does anybody know which of the two are faster and which ones last longer?

tmak26b

BFG R1s

Olitho

I race on Hoosier A6s, but Kumho V710 are right there with A6s on lap times for the first 4-5 laps or so, but then it feels like they drop off a bit. The A6s stay pretty consistent to the end of the race. V710s last longer in terms of miles and they don't have the shoulder cording problem of the Hooser x6 series.

Does anyone want to corroborate or refute my experience? I am not asking argumentatively per se'. I am asking others to share their experience.

Sidney004

The rounded chamfered corners of the V710 eliminated the edge cording I experienced running with limited camber, whats more, the longevity is better for two reasons; first the rubber is more durable and secondly because of the rounded corners, when you flip the tire, the inside surfaces are almost new, further enhancing longevity on the most heavily worn portion of the tire.

Olitho

I would race on V710s over R6s in a heart beat....

spazegun2213

its always been a fact that the a6's are faster than R6's which are faster then the v710's. I rave on v710's and love them because of the nealry 30 heat cycles i can get out of them, but they are not as fast, have more slip angle, but dont fall off as fast as the ho-ho's.

mikahb

The only time I've ever run R6's was at Roebling when I realized the Kumhos I brought were not as fresh as I thought they were. I swapped from 710's with probably 4 heat cycles on them to sticker R6's and slowed down almost 2 seconds, everything else staying the same. In my experience, the 710's are definitely faster than the R6's (maybe 2 seconds/lap), and the A6's are definitely faster than the 710's (about 1 second/lap).

Olitho

My experience is similar to yours Mikah, althought I don't think the A6 is that much faster than the V710. On opening laps I think they are very close with very slight favor to the A6.

The worst part of the R6 is how fast they heat cycle out. After three sessions they are toast after already being the slowest tire of the three. THe A6s and V710s are more consistent and resilient speed wise in subsequent heat cycles. It is just that the A6s are worn to cord the fastest... almost always on the shoulders.

Olitho

That has not been my experience. I would put the V710 a very close second to the A6, but it lasts a lot longer as you point out.

Dirty Howie

I looked up the V710 on TireRack

For the C6Z06 the sizes are slightly different than stock 285x30x18 and 335x30x19

The fronts are ROUNDED and the rears are SQUARE. And there are some notes about this being an issue in appropriate sizing in staggered sizes.

Plus, can you flip the tire on the rim like an R6 ....... the grooves are asymetrical


DH

kentz06

Interesting discussion since I have a set of V710s on order in 305/30-18 & 345/35-18. Want to compare them to the R6s I usually use.

I have found the R6 does heat cycle quickly but they do last. I typically get at least four heat cycles in per day so after 4-5 days they are wooden. With -2.5F/-2.0R camber they don't usually cord but wear fairly evenly across. I swap left/right but do not rotate on rims.

Pressure recomendations for the V710s???

Dean

gkull

Because of the cost of R-6's I'm going to toyo 888's or ni555 like some of the other fast locals

My local 4.2 mile track is very abrasive and I only get about 3 hours out of a set 295/335

Sidney004

Yes

monroepaul

It seems like the general consenus is the V710s for durability.

shifter77

ccw front 18x11/ rear 18x13, could i run the v710 in 3o5 front/335 rear?
dia = 25 frt/25.8 rear

sgsvette

Those sizes will work good on a C5, but it might not on a C6Z06 as it will affect the active handling.

Fronts= 25 Rears= 23 Cold
Hot= 34 @ 180 degrees

, but in HOT weather the A6 will drop off after it gets to a certain temperature as they are made of a softer compound and will get real greasy.

gonzalezfj

Is that conjecture on your part or have you actually experienced this phenomenon?

I have been using A6s since they came out and have never experienced greasiness.

Never heard it from any of the T-1 competitors or other HPDE drivers that use A6s.

By the way, I used 710s for two years and in my experience they cannot hold a candle to the R6s, much less the A6s.

YMMV.

Frank Gonzalez

sgsvette

Let me see here Frank....... I was a Hoosier sponsored driver for over 6 years, testing tires and helping to develop from bias-ply to radials. I won 6 out of 7 National T-1 races in 2002 and finished 2nd on the seventh race.
Currently I have been sponsored by Kumho for the last 4 years, also testing tires and win 99% of my races ALL on Kumho tires driving a Corvette. Most recently at the 12 hours of Sebring in the SVRA races last weekend.

Have I experienced this phenomenon? What do you think?

Why have you never experienced greasiness? You probably don't drive your car hard enough to get to that point.

Kumho and Hoosier are both great tires and the difference in performance is very close. Driver preference in feel is what determines which tire you use, and in case you missed it.... I said the A6 gets greasy after some laps IN THE HOT WEATHER!