rjkc5y2k

Looking for the Rival. I don't expect to a top contender.

0SpeedFreaksUSA

Just a shameless plug that we still have a couple sets of 285/35R18 RS3 V2 left that we have been moving for a great price for those EHP street tire loving folks like myself

Hankook R-S3 (RS3) 285/35-18 (Pair)
Hankook R-S3 (RS3) 285/35-18 Set of 4

I will see if we can procure any additional sizes at the same discount level as well.

-Matt M.

klodkrawler05

I'll preface this by saying I know nothing about them, but I see the new 200tw Toyo R1R comes in a 275/40/17 Might be an ok front tire option for c5z06's that want to run the stock 17" wheels up front?

I don't know what you'd choose for the rears though since the biggest 18" offering they have is a 265/35/18 maybe could pair it with Rival S as Xian had talked about doing.

Xian

Off the cuff, I'd expect the 255/40 17 Rival-S or 71R to be faster than the Toyo R1R. Nothing against the Toyo as I've run them on other cars but I think they're mostly irrelevant versus the new hAWtness tires.

talon95

I did finally run the Rivals last weekend on a fairly high grip asphalt site. People will probably think I'm smoking something, but it was the old HPT solo pad. It's weathered in a bunch since '06-'08 years and now offers really good grip for asphalt. Lots of exposed aggregate like normal asphalt.

Anyway I didn't back to back anything but did learn a few things,

1) They did seem to like slightly lower pressure than the RS3's. Maybe 2-4 lbs. I ran 28/28 with the 255/315 setup. The only negative I noticed was that the much more pinched 315 seemed to take noticeably longer to take a set in quick offsets. I need to experiment more, maybe even try running slightly more pressure in the rear.

2) This notion that the Rival overall has a "weird" feel is just a bunch of crap. They have a bit better turn in than the RS3. Although they make (at least on that surface) almost no noise which could bother some that are used to squeal at the limit.

3) They put power down some better than the RS3, but I wouldn't call it night and day. I suspect Sam was right about this all along (BStone may be better). I noticed Glenn beat Ryan to 60' on almost every run last weekend at the Pro too. I think the real speed from the Rival comes from lateral.

4) Wear was fine. Took 10 runs and all it did was scrub them in nicely. No center rib uneven wear, etc...

5) They don't work worth a crap when cold with ambient in the 50-60 degree range. It took at least a run to get them working.

Overall they seemed very fast though for a street tire and I took top pax the 2nd day (in part thanks to a re-run though) The course was a replica of last year's Nationals West course (as best it would fit). I'll try to get a video up when I get time.

Edit: also, if the Stones work well in 50-60 degree weather, than the last thing you're going to want to do is mix them with the Rivals (Stone front, Rival rear) if you plan to run in cooler weather.

mountainbiker2

Thanks for the review. I was worried about that. It seemed that the BFG's R1S race tire took at least 1 1/2 laps to get them to work. Then they were slow compared to Hoosiers anyhow. The Rival S seems to be the same from your post. I just drove on the BS 275 square this weekend and they hooked up great from the first corner. I'm really impressed with them.

Steve

dhowdy

If you can't even launch harder with the 315 then what's the point? I'm planning to stick with bridgestones for the rest of the year excepting some drastically different results than seen so far at spring nationals. Haven't seen anything to convince me otherwise, and I love how the car feels on them. I apparently forgot how to drive yesterday, but everyone is overlooking that Yom had the fastest scratch times on both courses in a bridgestone shod car.

Looking forward to the video, Steve. I can only assume you crushed the field worse than usual

talon95

I think they would be fine in 70+ deg weather and sun. I could feel them come in on the first run (maybe 1/2 way through, 55 sec run) and comparing DL1 data from run to run suggests that too. It was only around 55, cloudy, and windy yesterday and it had rained the day before so the pavement was probably cold. But in those conditions the first run is a throw away to some extent. At that site, the A6 behaves almost identically if that gives some idea.

mountainbiker2

That's good to know. I run many other events then SCCA. I could run my 18x10.5 with BFG 315/30/18 square. I wonder if that would be faster then BS 275 square? If you hear anything let me know. Thanks.

Steve

TypeIsCheap

Question of the year right there. So far it seems like they are so close in performance that many of the other variables start coming into play, including cost.

dhowdy

For autocross, I don't know of many people that would have the option to run 18x10.5 square AND still run street tires, so there's probably not going to be an answer to that question unless you test yourself. Given how close the 255/315 rival-s was to the 275 square bstone, it seems very likely to me that a much wide front on an adequate tire would have the edge. I really, really hope the wider 305 bridgestone comes out next year, then we won't even have to question these things.

troyguitar

STU runs those sizes. It's a good budget option for optima and other non-national-scca stuff too.

dhowdy

STU is limited to 285s

JLZ06TR

Dont know if it was mentioned but the RE-11 are available in C6 Z06 sizes.

Xian

It appears that both the Bridgestone and BFG are ~equally fast... Daddio did well with a blend of the two and JR did well despite massively over-tiring the front wheels.

383

Whats daddio running? R1val rear and 71r front?

justkickin

From another thread, both ran 335 Rival S in rear and 275 Rival S front or 275 71r in mixed mode.

What I am curious about, how did they get a 335 on the rear on a stock wheel? That must be pinched badly. Were spacers required to keep it from rubbing?

brenb

Correct. Though to be specific, it would be the Rival "S" rear.

AFAIK, the 275 Rival S has not shipped. As such, JR is running a 315 - to say it's pinched would be a massive understatement.

klodkrawler05

335 isn't really that pinched on a 18x12 remember both Daddio and Johnson are running C6Z's so they've got a lot more rim out back.

talon95

Does Junior have a C6? Results show a C5. He ran a C5 at Nats last year.