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Old 11-27-2005, 02:53 PM   #1
sciolist
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Default autoX rain tires

Thinking about wet tires for the upcoming season: My approach will be to drive to the events on the wet tires if there's a reasonable chance of rain, and carry the 710's in the car. This will include a few substantial excursions to tour events and then nationals, so wear and cycling are issues.

My initial thought was to use full-tread RA-1's and then just cycle them down to school tires when the tread gets too low for wet deployment. They would easily last a season for rains, but likey not two. RA-1's seem to work pretty well for me in the wet.

Next thought was Advan AO46's (OEM Evo tires). Rumor has it these work well in the wet, and they'd last longer than the RA-1's. I wouldn't have to be as careful about general street use. Haven't tried these in the wet, although they seem to grip fairly well dry.

Anyone have comparative experience with these two? Other streetable wet tires?

Thanks
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Old 11-27-2005, 07:42 PM   #2
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All I can say about the Advans is that they were on the ESP winning Evo when it rained on day 1. The Toyos are good rain tires but won't hold up if you plan on making long trips to Tour and Prosolo events.
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Old 11-27-2005, 08:26 PM   #3
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Quote:
Originally Posted by solo2wrx
All I can say about the Advans is that they were on the ESP winning Evo when it rained on day 1.
Yeah, that's what got my attention. The RA-1's would still have some decent tread left after 5K or so travel miles, but the Advans are street tires. They'd go two seasons if I only used them as rains and for transit to events where rains might be needed.
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Old 11-28-2005, 01:05 AM   #4
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A032's are also quite good in the rain
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Old 11-28-2005, 09:45 AM   #5
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Quote:
Originally Posted by REX8
A032's are also quite good in the rain
actually V710's are better than 032's.... one of our H-stock competitor switched during a few runs which kept raining.... and he was surprised to see his 032r's was slower than v710's....

In my RS... I was surprised to see the amount of grip I had in rain..... as the 710's are way better than the Victoracers I had previously.... which these wouldn't grip at all.... and the car would simply understeer......

but for 30 events I've done (in the past 2 years), only 2 were rain events... so is it worth having dedicated rain tires? probably not....
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Old 11-28-2005, 12:17 PM   #6
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Has anyone tried p-zero corsa's? I personnaly think their awesome in the wet. I suppose it might be the sizing issue.
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Old 11-28-2005, 12:49 PM   #7
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Quote:
Originally Posted by mccanixx
Has anyone tried p-zero corsa's? I personnaly think their awesome in the wet. I suppose it might be the sizing issue.
1) I don't believe the p-zeros are legal for Stock or SP as they weren't made in enough sizes/diameters to meet classing rules.

2) They're definitely not legal for ST and the one size that meets ST requirements is on the exclusion list.
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Old 11-28-2005, 01:14 PM   #8
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ooops, I should really pay more attention. Just mid lunch perusing. What's the diameter availability limit for Stock class? My adobe won't open the scca pdf. Is it 6 or something? Regardless, I was just thinking R compound wets.

I knew there was a reason I didn't post in motorsports much.
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Old 11-28-2005, 01:57 PM   #9
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Quote:
Originally Posted by mccanixx
ooops, I should really pay more attention. Just mid lunch perusing. What's the diameter availability limit for Stock class? My adobe won't open the scca pdf. Is it 6 or something? Regardless, I was just thinking R compound wets.

I knew there was a reason I didn't post in motorsports much.
Each tire model must be sold in at least four rim diameters, with a total of at least six sizes. The Pirelli Corsas are only 3 diameters.
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Old 11-28-2005, 02:19 PM   #10
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which should i run in the rain (SM class)?

1) half+ gone Victoracers in 245/45/16 on light wheels (13.x lbs)
2) 3/4 tread Conti ExtremeContacts in 235/40/18 on heavy street wheels (21+ lbs)
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Old 11-28-2005, 02:24 PM   #11
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Whichever you feel more comfortable driving.

I run V710s in the wet personally... they'll still be faster than street tires (and in some cases faster than Hoosier wets)
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Old 11-28-2005, 02:33 PM   #12
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Quote:
Originally Posted by KC
Whichever you feel more comfortable driving.

I run V710s in the wet personally... they'll still be faster than street tires (and in some cases faster than Hoosier wets)
Really? What do you mean by "wet"? A few drops, water below top of pavement, some puddles, serious standing water?

I haven't tried 710's in standing water, but that seems like bad news.
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Old 11-28-2005, 02:41 PM   #13
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1/2" to 1" puddles. Depends on the surface really and how good the drainage is. (just a few spots.. or many spots) Both my co-driver and myself were faster than all comers... even those on Hoosier Wets at the Oscoda Pro with V710s for Sat afternoon runs.

Just have to understand to give it up before the puddles/rivers.

--kC
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Old 11-28-2005, 04:01 PM   #14
sciolist
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On aggressive asphalt, I can imagine that the 710's would still be pretty fast - as long as the water was mostly confined to the paving's voids.

Once the water starts getting up above the pavement, though, it seems like tread is going to be critical.

Either way, if the car is going to be driven to the event then there will be at least one additional set of tires. This begs the question of what streetable tires would be most effective once you get to the point where the 710's begin hydroplaning.
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