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goofed on shaving depth, should I just run RA1 6/32?

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goofed on shaving depth, should I just run RA1 6/32?

Old 04-23-14, 09:13 AM
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goofed on shaving depth, should I just run RA1 6/32?

I goofed and told tire rack to shave to 6/32 and I should have told them 4/32 now there is still a ton of tread left. I run it7 so competition is scarce and really they are either way faster because of a better engine or way behind. I want to be competitive but 1/2 of a second on a lap isn't going to matter. I can get a local shop to shave them the rest of the way but is it worth spending another $60?

Also could I race on them one weekend, see how I like them, then shave them down to 4/32? Or is this frowned upon because the tire has heat cycled a bunch?
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Old 04-23-14, 11:46 AM
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the Ra1's are pretty forgiving about heat cycles, i'd just run em, and enjoy the extra weekend you get on those tires
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Old 04-23-14, 02:08 PM
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Just keep an eye on them and make sure they don't start chunking...
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Old 04-23-14, 05:10 PM
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When I started racing SM (meaning I wasn't fast), I started with 6/32nd shaves. The tires last forever. I heat cycled them out before I wore them out. They have no grip but they still have tread.
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Old 04-23-14, 09:54 PM
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So what is the etiquette on shaving them after they have been worn a bit? I would think it would even the tread out of any wierd wear patterns....
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Old 04-23-14, 11:41 PM
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Most tire shavers won't shave a tire that has been raced on. Race tires collect rocks and debris from the track that are hard on the shaver knives.

I have never raced on RA1s but the reputation they have is that they get faster as the tread wears away. I seem to recall that the fast Spec Miata guys figured out that the optimum tread depth for a new of RA1s is 2/32. Of course they don't last long at that depth but I can attest to how fast the cars were - a lot of the passed me!

Seems to me you are stuck with what you have. After a few races you will wear them to a more optimal depth.
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