Free - Formula Renault Michelin competion slick tyres

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BigBobPilot
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Free - Formula Renault Michelin competion slick tyres

Post by BigBobPilot » Tue Aug 13, 2019 11:56 pm

I have a set of Michelin Formula Renault slicks:

1 pair of fronts 20/54 x 13 mediums (S412) fit on 8" or 9" wide rims (My slicks are on 9" as specified by Michelin, but my wets (same tyre with cut tread) are on 8")
1 pair of rear 24/57 x 13 medium (S412) fit on 10" wide rims

These are free to anyone who wants them, I thought I would offer them up rather than just scrapping them. I used them whilst building my SS1 race car to work around for set-up & size. I also used them on my Curborough shake-down test, where the grip was ok. One of the rears has cracking in the side wall, the other rear & the fronts would be ok to use. I’m offering them up in case anyone want to try slicks for size, I’m not really suggesting they are a prospect for serious competition use, but if you want them, you can make your own mind up. I don't know the age, but there is gauge depth left to use (I've not measured them). I think Nick Keyser has used the front size on both front & rear, so that the serious rear wing mods that I have done are not required.

I’m not going to be at Curborough through the day on either the Saturday or Sunday, but if someone wants them, I can drop them off on Saturday evening as I will be passing fairly close-by. Alternatively they can be collected from Warwickshire, or transport arranged via intermediaries, but I don't really want to post them.
20190705_172634.jpg
20190705_172634.jpg (133.22 KiB) Viewed 393 times
Front
20190705_172652.jpg
20190705_172652.jpg (95.48 KiB) Viewed 393 times
Rear
20190705_172715.jpg
20190705_172715.jpg (100.38 KiB) Viewed 393 times
Rear tyre with cracks in sidewall
20190705_172511.jpg
20190705_172511.jpg (151.16 KiB) Viewed 393 times


Ben

SS1 CA18DET race car
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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Free - Formula Renault Michelin competion slick tyres

Post by Ollieoldbeard » Mon Aug 19, 2019 10:32 pm

Hello, I don't really get those size ratings, can they be converted to normal sizes ?
(I've got wide 14" rims that are hard to get tyre's for )
Thanks



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BigBobPilot
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Free - Formula Renault Michelin competion slick tyres

Post by BigBobPilot » Mon Aug 19, 2019 11:26 pm

That is the normal sizing for competion tyres, here you go:

https://www.michelinmotorsport.com/Tyre ... ec_diam=13

If you need a road tyre converter:

https://tiresize.com/calculator/


Ben

SS1 CA18DET race car
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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