Wrecks
I have traveled many miles in 7 decades. Have only seen 3 RV wrecks. But on Monday I39 south of Rockford Il a Nothbound TT blocked both lanes from grass to grass. Was on it’s right side. Tow vehic...
Forum Discussion
Bedlam wrote:Sure. The load/inflation tables for ST tires are based on a 65 mph max speed. But there is a note:mike-s wrote:
Ah, I see you're not familiar with the Tire and Rim Association Year Book, the "bible" of the tire industry. Your loss.
Can you share with us the information in the $125 specification book on how 65mph rated ST can be run safely at 75mph for extended periods? I run a higher load range tire and rim on my trailer for better wear and puncture resistance, but still adhere to the sidewall speed rating. I really don't have a desire to drive faster than 65mph while towing, but am interested in the dynamics.
For operations at speeds above 65 mph, loads and inflation pressures in above table are adjusted as shown......the table says for 66-75 mph, you add 10 psi to the pressure required for the load. For 76 thru 85 mph, the load also gets derated by 10%. You still can't go over max cold inflation pressure, so depending on the load your tires carry you may need to bump up to a higher load range tire in order to add that extra 10 psi.
