Boxologist Posted November 11, 2009 Share Posted November 11, 2009 http://sccaforums.com/forums/thread/390238.aspx appears to be 205 50 15, spec miata size since they are going back to the RA1. if anyone local is planning on them. let me know. i may want to split a set if ur up for it since i would want 225 45 15 on the rear. Link to comment Share on other sites More sharing options...
Kitcat Posted November 11, 2009 Share Posted November 11, 2009 Jon: Wld you use these as a street/rain tire, or for dry pavement competition? Mike Link to comment Share on other sites More sharing options...
TheDingo8MyBaby Posted November 11, 2009 Share Posted November 11, 2009 I've driven on them in the dry. Pretty much standard for an R compound tire. It's a good bargain R compound tire as it holds up to heat cycling pretty well and seems to last. It's not much better than the RA1 in my opinion. From what I've heard they're o.k. in the wet. I'd definitely worry about standing water with a tread pattern without a central rain groove. Sevens are easy enough on tires that if you're doing mostly dry weather driving I'd reccomend them as a street tire. The RA1 would probably be a better choice if you're going to see a lot of wet weather driving. On one final note, the RA1 likes a lot of camber and the R888 similarly so, though it seems the R888 produces more camber thrust. I had good results slightly reducing the camber. Link to comment Share on other sites More sharing options...
Kitcat Posted November 11, 2009 Share Posted November 11, 2009 (edited) Define "a lot of camber". I run about 1 1/2 degrees of negative. See my knock-kneed avatar, above. Mike Edited November 11, 2009 by Kitcat Link to comment Share on other sites More sharing options...
TheDingo8MyBaby Posted November 12, 2009 Share Posted November 12, 2009 (edited) I was running around -3 degrees up front, but this was in a car with a live axle. I believe the spec miata guys are around -2.5 to -3 with the RA1's. with a caterham I'd guess -1.5 to -2 would be reasonable. It's one of those "your results may vary" sorta things. If you don't have one, you can buy a camber gauge for pretty cheap. Toe is easy to check with string/measuring tape. You can definitely play around with it. Keep in mind, it may feel better in the corners, but you'll also lose some braking. Edited November 12, 2009 by TheDingo8MyBaby Link to comment Share on other sites More sharing options...
eVox Posted November 13, 2009 Share Posted November 13, 2009 225/50/R14s on my car. Dry driving is great. These tires will still grip though shiny road too. Hitting a puddle in a seven is risky...the one time I spun from a puddle (and into a curb) on the streets I had R888's up front, and 205 width all season nexens (drift tires if youre curious) on the back and the back still came around. The few times I've been stuck in the rain I've been more concerned with the lack of windshield wipers... Link to comment Share on other sites More sharing options...
gjslutz Posted November 16, 2009 Share Posted November 16, 2009 I love my R888's, but not with standing water. Wet roads are fine, dry is great. If you can not see the grain of the road, hold on! I also run the 225 45 15 on the rear, and I like R888 all around. Link to comment Share on other sites More sharing options...
Boxologist Posted December 29, 2009 Author Share Posted December 29, 2009 bump for those who needs to take Santa's coal and make rubber with it. expires in 2 days. Link to comment Share on other sites More sharing options...
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