Originally Posted by
I-Like-To-Bike
Probably 50¢ to the manufacturer and not worth that if they wear out so fast. Get decent replacements when it it is time and save money in the long run.
I will run through 3-5 of them purchased from the original supplier of the bike ... so that I can get a mean and standard deviation of the lifespan of the Kenda K191 under my current commuting conditions.
My prediction is first flat and/or underneath fibres showing through at roughly 2250±250 km (roughly 1400±160 miles).
Which is good value $7/1500 miles or $46 for 10000 miles on the rear. Can't complain about that!