SCCA Solo C Street Discussion

[solort]

Originally Posted by 7thgear

when I made my post yesterday it was already listed at 6


maybe your page was cached from back then when it was all ambiguous.


If they're a treaded V710 with some voodoo magic, I think it should be an amazing tire. Definitely would be nice to see Khumo back in the game at the street level.

Everything I have read so far, they fall a little short of the Rival S and the RE71R. I wish they were a treaded V710 or Victoracer

[simpleisbest]

Michael Heinitz has run the V720 locally on his STF RSX and did back to back with the Rival S. Said the times were on par. Supposedly the sidewalls felt a lot stiffer too. Might be good for camber challenged cars, I would think...

[markw]

Originally Posted by simpleisbest

Michael Heinitz has run the V720 locally on his STF RSX and did back to back with the Rival S. Said the times were on par. Supposedly the sidewalls felt a lot stiffer too. Might be good for camber challenged cars, I would think...

He said they don't put the power down like the rival or 71r. At least down here on Qualcomm's surface. I'm debating a set for my daughters NB Miata.

Mark

[travisb]

Any recommendations for tire pressures on stock size ZII on somewhat loose pavement and about 80F temp tomorrow?
I've done two other events on these tires but one day was 35F and the other was about 50F and raining, so this will be my first dry and hot day on them.

[Cueman]

I've been running 37/33psi with the same tire and size.

[renfield90]

Looked like a really close fight at the Ohio pro - top 8 drivers (out of 13) were covered by less than 1.5 seconds. Seemed like a short course though with dry times dropping under 30 seconds.

I'm curious what Sean's feedback is, but based on finishing 7th I don't think he was happy with the 215s. His 60' and reaction times were good, but then you have the rest of the course to run...

[Jawnathin]

Originally Posted by simpleisbest

Michael Heinitz has run the V720 locally on his STF RSX and did back to back with the Rival S. Said the times were on par. Supposedly the sidewalls felt a lot stiffer too. Might be good for camber challenged cars, I would think...

Hmm, if times are on par and the sidewalls are stiffer, that is very encouraging. Any feedback on wear for the V720s?

My RE71Rs are already worn out, so I'm stuck using RS3s that are getting slower and worn out. Their floppy sidewalls suck too. Hoping they last the rest of the season but I'm not sure that they will.

RE71s have great grip, but their wear is very discouraging. To the point where I would look into something else for locals. I might as well be on Hoosiers if I'm just going to get less than 150 runs before they wear out. So I'm thinking of the Rival S or V720s instead. Kumhos are $130 cheaper than the Rival S and $100 cheaper than the RE71Rs. As long as they're in the same ballpark and I don't have to replace them every 150 runs I might go that route instead.

Or maybe I should just buy a car with a double wishbone up front and not camber challenged so I'm not killing the shoulders at every event.

[7thgear]

I dunno, 150 runs, if they're all competitive, sounds really good to me.

[Jawnathin]

My RE71s have about 120 runs on them with another 20 or so runs left on them. That includes paying to get them flipped and rotating them regularly. Without the flip they wouldn't have gone more than 80.

For comparison, my current set of RS3s have about 120 runs on them now and I think I can get another 60 runs before I need to think about flipping them. I probably won't do it this time because the rubber gets heat cycled, but the last set I did that on had over 300 runs before they ran out of rubber. Grip degraded as the runs piled on but I didn't have to worry about cording them until I got to 300 runs

The RS3s aren't as good as an RE71, but still that is 180 vs 80 runs (no flip) or 150 vs 300 (with flip). That is wearing out twice as fast as the RS3. Number of competitive runs might be similar (100-150-ish), but I can still use a tire with rubber left on them for practice/locals and not worry about cords.

Between two (sometimes three) drivers each event and going to 3-6 events each month, tire costs add up big time. I would prefer a longer lasting tire when possible, assuming some same ball park level of competitiveness.

[simpleisbest]

Originally Posted by Jawnathin

Hmm, if times are on par and the sidewalls are stiffer, that is very encouraging. Any feedback on wear for the V720s?

My RE71Rs are already worn out, so I'm stuck using RS3s that are getting slower and worn out. Their floppy sidewalls suck too. Hoping they last the rest of the season but I'm not sure that they will.

RE71s have great grip, but their wear is very discouraging. To the point where I would look into something else for locals. I might as well be on Hoosiers if I'm just going to get less than 150 runs before they wear out. So I'm thinking of the Rival S or V720s instead. Kumhos are $130 cheaper than the Rival S and $100 cheaper than the RE71Rs. As long as they're in the same ballpark and I don't have to replace them every 150 runs I might go that route instead.

Or maybe I should just buy a car with a double wishbone up front and not camber challenged so I'm not killing the shoulders at every event.

When he did the back to back, that was at El Toro. It's a pretty consistent "national level" surface. The Rival S he had some runs, but the Kumhos were brand new.

I am gonna keep my eye on what people say about the V720. If they were out at the beginning of the year, I would really consider testing and setting up the car with them. If the compound is competitive, the stiffer sidewall will always be a huge benefit for strut cars.

I am pretty far down the rabbit hole for set up so far with Bridgestones, but I will buy a set of V720s after Nats for sure.

[Locust]

Hey guys where do I get the OEM crash bolts from? I need them by next Friday (the 10th).

[SVLTE]

Originally Posted by Locust

Hey guys where do I get the OEM crash bolts from? I need them by next Friday (the 10th).

Your local dealership should be able to get them for you by then.

[Locust]

Originally Posted by SVLTE

Your local dealership should be able to get them for you by then.

My local dealership is... incompetent. How many bolts do I need? Just two?

[ChrisV]

Originally Posted by Locust

My local dealership is... incompetent. How many bolts do I need? Just two?

Yup.

Also, got my car aligned on Konis with TRD springs tonight. - 2.2 camber.