Chris,
As far as I am aware there is no link to the tyres. I ordered my tyres last week through the Motorsport Manager for South Pacific Tyres (that's Dunlop in NZ) they are 430/1160-15 fronts and 530/1500-15 rears. They are being indented from the UK and should arrive about Christmas.They are Dunlop Post Historic series race tyres which, in NZ, are compulsory for classic racing for cars of this period, so that dictated the 15" rims, and also limits the brakes! /ubbthreads/images/graemlins/frown.gif They are a bias ply, treaded (CR82 pattern), nonroadlegal race tyre. For other racing, where there are no "classic" requirements or class I will probably, later on, run either Avon or Goodyear F5000 slicks. To initially road register it, I will have to fit different wheels with road legal tyres, hopefully I can borrow Lim's (see first post). When I switch back to the CR82's I don't think the enforcement agencies will realise they're not road legal. /ubbthreads/images/graemlins/wink.gif Time will tell, and if they do notice I would hope to sweettalk my way out of it initially, not that I'm planning many road miles anyway.
Whether you go for 15" or 17" will depend on your personal preference, tyre availability, looks, etc. Brake size will not be an issue as you will be able to get more than adequate calipers and rotors inside the 15" rims for road use or for serious track work if it comes to that. Remember that with a 40 having comparitively wide rear rubber and a lot of weight in the back, your rear brakes can do a lot more work than in a front engined setup and this gives the fronts a comparitively more easy time. I will be using Wilwood 300mm x 32mm discs and forged billet Superlite 4 pot calipers front and rear and I expect them to be more than up to the task for all out racing.
Hope this helps you out.
Regards
As far as I am aware there is no link to the tyres. I ordered my tyres last week through the Motorsport Manager for South Pacific Tyres (that's Dunlop in NZ) they are 430/1160-15 fronts and 530/1500-15 rears. They are being indented from the UK and should arrive about Christmas.They are Dunlop Post Historic series race tyres which, in NZ, are compulsory for classic racing for cars of this period, so that dictated the 15" rims, and also limits the brakes! /ubbthreads/images/graemlins/frown.gif They are a bias ply, treaded (CR82 pattern), nonroadlegal race tyre. For other racing, where there are no "classic" requirements or class I will probably, later on, run either Avon or Goodyear F5000 slicks. To initially road register it, I will have to fit different wheels with road legal tyres, hopefully I can borrow Lim's (see first post). When I switch back to the CR82's I don't think the enforcement agencies will realise they're not road legal. /ubbthreads/images/graemlins/wink.gif Time will tell, and if they do notice I would hope to sweettalk my way out of it initially, not that I'm planning many road miles anyway.
Whether you go for 15" or 17" will depend on your personal preference, tyre availability, looks, etc. Brake size will not be an issue as you will be able to get more than adequate calipers and rotors inside the 15" rims for road use or for serious track work if it comes to that. Remember that with a 40 having comparitively wide rear rubber and a lot of weight in the back, your rear brakes can do a lot more work than in a front engined setup and this gives the fronts a comparitively more easy time. I will be using Wilwood 300mm x 32mm discs and forged billet Superlite 4 pot calipers front and rear and I expect them to be more than up to the task for all out racing.
Hope this helps you out.
Regards