Marvin Rifchen, founder of M&H, former owner of M/T, recommended running new LSR tires through several "heat cycles" to break them in to lessen the likelihood of chunking, etc. Either on the car or spinning tires under an infra-red heat lamp.
What's the part number for the 21-3.5 15? Thnx.
Five years ago I asked Marvin about putting 90 lbs. of pressure in a 50 lb. rated tire. He burst out laughing and said, "What the h*ll you wanna' do that for?" He did agree with using nitrogen.
