I've looked at some tire conversion charts and did a thread search, but I'm
still lost. Tire #1 - I have been running a rear D606 - 130/90-18. Section width = 130mm Aspect ratio = 90% (?) Rim diameter = 18 inches Tire #2 - Now, I'm looking at a tire that is: 4.10-18 59P. Section width = 4.10 inches Rim diameter = 18 inches Casing strength = 59P (?) Anyone ...