My question is I have S637 tires that are 12/15 dated with lots of tread so what’s the usual life span on these tires? Also they list 110psi on the sidewall and I’m running 80psi. Should I air them ...
I vote for a chance complete change at four years. “Tread” isn’t usually an issue on TT tires. Regarding pressure, if you are a tire expert run them at whatever you want but the manufacturer says use the pressure stamped on the tire. Not being an expert I follow manufacturer recommendations but the I was in the Army! lol
See https://www.sailuntire.ca/plt/S637st.html 110 pounds