yeah- the tire is DOT rated and it should be a second or two faster than the NT01

it will also wear a lot faster than an NT01

 

Thanks Dcamp. There is mounting pressure in our series to limit the use of "DOT Rated" but not suitable for Highway use tyres in our class.

This would be a great tyre with that in mind by the looks.

Can I also presume from the additional grooves the wet performance is better than the NT01?

Part of the argument is that the hankook and hoosier guys (minimal / zero tread) frequently won't change to a more wet suitable tyre if it is showery rain, they just intend to slow down.....a few of us think this is a good way to have an accident at some point...

 

I've driven RA1 in a downpour and they did surprisingly good but I was cautious. I'd think the NT01 would be sketchy since they start at 2mm less than the RA1. If you are looking for a dedicated rain tire the R1R would probably be a better choice.

 

more looking at a dual purpose tyre. obviousley wet weather will never be as a good as a dedicated one.

Unless it is deep standing water i found the NT01 to be pretty good, considering it has minimal grooves.

I presumed by looking at the Rival S grooves AND it is a street legal tyre that the wet weather performance is likely to be even better than NT01.

 

The RA1 is designed as a rain tire to begin with. It should be shaved if the primary purpose is dry traction.

 

Bumping this back up again.. Its time time buy tires for this spring/summer, what kind of lifetime should I expect to get out of the Rival S? # of auto x runs, # of 30min HPDE sessions? Would they tolerate being driven to/from the track without running out of heat cycles?

 

I was going to ask the same question, specifically I'm cross shopping the v720's and rs3 with some bias towards the rival and 720 because they are faster and the price point of the 720 can't be ignored.

 

Don't forget about the reviews of the V720's regarding delamination after a couple of long sessions. I was really excited about them until I saw that. Hopefully there will be a manufacturing/design revision that will take care of the problem.

Until then, I'll either skip them, stick to short-session driving, or wait til they are available at Discount Tire and warranty them after every track day.

 

The on track durability is a concern on both the rival and 720 but yes there is certainly more of s concern on the 720. From what little data I've seen it's a tread splice issue on the 720..... May or may not be able to prevent or reduce the issue with frequent rotations. I would also like to know what an extended track stint is..... Big difference in a 30 min session and a chump car run it till it cords approach.

 

Does not sound like a tread splice issue to me. Federal 595 RSR's have a tread splice issue, but I still bought them because they don't actually fall apart, they just show a little crack

From some TireRack reviews:

"both front tires got greasy during an autocross and delaminated down the center"

"Tires all chunked and delaminated in strips between the middle and both outer edges of the tires within 3-4 hours...These may be ok for drivers ed, with cooldown time between 20-30 minute sessions, or street use, but I will not risk purchasing another set even when we run a track that is easier on tires, just not worth the risk"

"I used a set of 6 tires on my NA miata for a period of 10 hours of track time. We changed drivers in the car four times, and other than tire rotation during driver swaps, these tires never got a rest. Before the end of the day, all six tires had prematurely completely delaminated. Do NOT use or consider these tires for any sort of serious track work.I believe what happens is the tire gets hot, and the strip of rubber in the middle of the tire melts right off, sometimes taking the rubber on the edges with it"

 

FYI, there is a thread here on the V720s: https://www.miataturbo.net/wheels-ti...ho-v720-84873/

I ran them briefly on my wife's NC at FM Summer Camp last year, and found they started to fall off even after a short (7-9 min) session in 95* temps. More info in the thread....

 

And there's the couple data points that rule the 720 out. Just a balance of wear vs. grip between the RS3 and the rival s

 

Well I ordered the Rival S, since that was pretty much the only thing available in 225 right now. I might have gone with the RS3 for the wear if it was available

 

That's my conundrum as well, rival s is in stock and nothing more than "March" for an eta on the rs3.....I could miss two auto x events by the time they get in. If I knew the rival would last through 90 30-45 second auto-x runs and two track days they would last me the season.

 

Read your thread/s the other day, it's where I first learned of these tires. Thanks for the info!

 

FWIW tirerack is now showing rs3s in 225/45r15 available 3/10 @ $118 ea

 

There are rumors that the original Rival will be available at some point this year but Tire Rack doesn't have any confirmed production date from BFG.

 

Has anyone found what the sweet spot for camber is on these tires that is willing to share? I'm at 3.2 front and 2.7 rear to get started. While we're discussing what tire pressure did you run? I'm planning on aiming for 32 hot.

 

Using a tire pyrometer-949 Racing

 

Right....... Just trying to see if anyone was willing to cut down on my learning curve with a new to me tire. I find folks are pretty open with what tire pressures work for them, was hoping it would be the same for tire specific alignment settings.