30-04-2020, 04:23 PM
From a new contributor - i've run Longstone 3.50 x 19 on my RP for 8/9 years now and have always used 30 psi with no problems of wander etc. When originally fitting them I happened to buy a classic car mag which had an advertising insert from Longstones which listed pressures for various vehicles. A7 30psi front/back. Just fitted another set, best tyres i've used.