thx guys, so I have 175/65-15's or 195/55 -16s (Actually Goodyear Excellence ROF not the Dunlops as I thought - sorry)
the 195s are better being wider hence better grip
BUT the 15 wheels are much lighter, lower centre of gravity, shorter gearing etc and I dont care if I wear them out as I'll put the RFs back on to go home anyway ...
so, I'm thinking to do a few laps with the 16s to get base laptimes & learn the track then switch to the 15s, check laptimes / evaluate performance again and poss go back to the 16s just before the end of the day to see if my lines, confidence etc have given any improvement in laptimes rather than just the different wheels ...
Will then be looking for a set of track tyres
for which Kumho Ecsta Sports KU31s 195/50s or a 205/55 tyre wud be ideal ...
Bob, really appreciate your points about brakes & cooling down in the pits
Am definitely also going to fit the 15s and do a road test to see how they corner, grip if wet, check ACS under acceleration etc before carrying them to the track with a jack & brace
If theyre no good, I'll just buy a secondhand set of track wheels ...
Just need to book the Circuit Days event at Oulton Park on Jan 19th, persuade my mate to pit crew, pax and borrow a helmet from his brother now
any thoughts on tyre pressures for the track PLEASE guys ?
lower than road ?
same front & back or higher at front ?
etc