Post by Phil Nottingham on Aug 4, 2009 15:56:33 GMT
I have made this a sticky to help future searches.
The correct X ply tyres are 6.70x15 but these given poor roadholding especailly in wet and on corners and remoulds and cheap foreign ones are not to be recommended and IMHO unsafe.
The direct equivalent radial replacement that should receive insurance company approval but I advise ought to notified as a mod just in case are:
185SR or HR or VR x 15 or 205/70 SR/HRR or VR 15 4 ply radials. Commercial 8 ply van tyres must not be used as the speed rating is not high enough and will make the ride very harsh Any other size used must be notified to yourt insurance company and wider ones will foul the wings and may roll off the rims.
The 205's are much wider than 185's or 6.70's and will plac emore stress on old steering joints, powers steering seals so be prepared for leaks and groans especially when cold.
Pressures are minium 30lb all round but can be increased by 10% when loaded
The 185's and 205's will give virtually the same rolling distance as the X plies and teh 185's look closest in appearance to X plies especially some of the modern treads.
3 Litres also use the same sizes but 32lb's pressure is better at the front.
[/img]Hi as far as original Tyre's go, i am pretty sure that Rover fitted 670X15 Tyre's on these cars. i would guess that Rover fitted Avon, i know they did earlier in Rovers history. Avon make a 670H15 TurboSpeed which; if you want to stick with crossply Tyre's they would be superb, as this Tyre was original equip on the DB5 among other Aston Martins. the standard radial equivalent of 670X15 would be a 185r15, it is slightly smaller in diameter but approximately the right width, Avon make a 185VR15 TurboSteel which would be very good. but i would suggest that Pirelli's Cinturato would be best, because Cinturato tyres are excellent and they were also fitted to the P6. And the Cinturato is a fantastic and period tyre. There are also other brands of 185R15. However At Longstone Tyres we have just bought a big batch of the bargain Federal 185R15 tyres which are a snip at £ 53 + vat
I am aware that this is a commercial post. please just remove it is you think it inappropriate. I thought your members might like to know about a bargain
Post by Phil Nottingham on Jun 18, 2011 11:46:19 GMT
Its nice to have an experts opinion - I have also had from your firm the wide tubeless valves that P5 3 Litres and P4's use that many tyre fitters say are NLA and use the old valves which is not a good idea.
When I bought my preset P5B it had the expensive Avon Turbospeed radials which did not wear well or handle at well in the wet
Phil - 1964 P5-Coupe PMB***B & P5B-saloon LHO***L & other classic Rovers & Land-Rovers
I now have Federal tyres on my coupe and they are very good. Previously I always had Avon Turbospeed crossply which is what our cars originally came on, as well as Dunlop. However the last Avon's that I had from a specialist supplier were several years old and very expensive when I bought them, which may explain why their grip was even worse than with previous crossplys. A tyre has a shelf life of just 6 years, but 10 if fitted fresh on a car. All tyres are date stamped in code, so check before you buy