Anyone used Dunlop cr311 tarmac rally tyres on track?

[JB21]

I've recently bought 4 used medium hankook full slicks in 200/580/15 but one of them isnt usable so only have 3. These dont come up often used so doubt I'll get a single or even a pair withoutbuying new. I also would prefer a wider rear tyre.

So a pair of new medium Dunlop CR311 tarmac rally tyres have come up cheap in 215/45/15 size.

Cant find much info on them for track use and these are actually R rated so I'm apprehensive the front will have much more grip than the rear.

Anyone used the CR311 R08 on track?

 

[Nathan Evans]

Old tyres now them mate. Haven’t been manufactured for a number of years now. Whats the compound? It will be X and a number

 

[JB21]

Old tyres now them mate. Haven’t been manufactured for a number of years now. Whats the compound? It will be X and a number

Yeah they're 8 years old according to the DOT dates. R08 (X08) compound so road legal. Got myself a set of MRF slicks instead.