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Question:

My brother gave me a used Dunlop motorcycle tire that I am considering using as a rear tire for my motorcycle.

It says however, for front tire use. The tread pattern looks suitable as a rear tire and the size is only one size smaller than the recommended for my motorcycle. The tire I got is a Dunlop 110x90x18, which has the words for front tire use. I inspected it and the sidewalls and the tire beads seem to be in reasonably healthy condition. The recommended rear tire size for my bike is 120x90x18. Would someone be kind enough to give me some advise why I should not use this tire or if I can consider using this tire. My motorcycle is a 1986 BMW K75c. Thank you.

Answer:

Car tires have a flat tread. Motorcycle tires have a rounded tread so they get traction while leaning in a corner. Cars don't lean in corners. I would think it would be dangerous to use a car tire on a motorcycle, even on a cruiser or touring bike. This is because you would be fighting the bike to lean in a corner. If the bike would lean in a corner you would ride up on the side wall which would give little traction. I wouldn't risk my life to save a few bucks on a tire. Do it right and use a tire designed for the task.
Still laughing at the first answer -sorry- But did you ever consider the inner design that it is not made for pulling Unless it came off of a front wheel drive bike THAT is why it is marked in the first place If it shreds on you then you may belive what the mfg says They dont mark them just to confuse you
Have used front tire on back before- but the bikes were smaller engined work bikes. Your BMW 75 is a tempt to ride 100mph capable machine and you'll probably go that fast(I did on 75/5) and risk blowout. find a 400cc commuter that runs 55mph mostly and needs a tire until couple paydays down. You say its marked front only- a little bike may use it . If you get a dual use tire marked 'front' arrow and opposite 'back' then it's easier to utilize. If you really need the tire to make it home or something like that then mount it and go up to 50mph or so, no hotfooting. Most of the front tires mounted on back situations I've seen have been this kind of emergency- burst back tire that was marginal to begin the ride, only spare available was a take off front from a set of replacements job. .

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