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Old August 8th, 2019, 04:41 PM   #1
Bills dad
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140 rear tire

So I got a stock 130/70-17 on the rear of my ex250 that the previous owner decided to burn out till it's got a sweet flat surface, so I'm looking to go up a size wider to the 140. I understand the clearance and all, I would like opinions on a good tire in that size and where I might find it. Out here most everything is purchased via Internet. Im sure this has been discussed many times over but your input would be appreciated!!!
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Old August 8th, 2019, 05:23 PM   #2
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If you're looking for basic commuter tyre, Kenda K671 is heavy-duty cruiser model in that size which will get you 15-18K miles.

If you're going on racetrack occasionally, Bridgestone BT-45 is good dual-compound tyre with softer edges. Good for 10-12K miles.

Whatever tyre you get, DO NOT inflate to max-PSI rating on sidewall (unless you weigh 450-lbs). Use pressure listed in owner's manual for bike. About 29-33psi works well for most people. Gives good combination of grip and tyre-life.
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Old August 8th, 2019, 08:54 PM   #3
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It's more for in town however would like the capability for it to run well if I have the occasional desire to preform, and does good in wet conditions if absolutely necessary. I don't weigh more than 150 so not much weight between me and the bike.
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Old August 8th, 2019, 09:09 PM   #4
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My BT45s work well on my 250 for spirited riding.
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Old August 8th, 2019, 09:15 PM   #5
Bills dad
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Thank you for your time and help!
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Old August 9th, 2019, 06:12 AM   #6
Triple Jim
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You're welcome, Craigen. I don't mean to suggest that I recommend going to a larger size though.
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Old August 9th, 2019, 12:27 PM   #7
Bills dad
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I totally understand. I don't want to get carried away with the size but one size up seems reasonable
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Old August 9th, 2019, 02:19 PM   #8
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Did you check the recommended rim width for the tire you're thinking of getting? With one 130 tire I bought to replace a 120 on my Moto Guzzi, I found that it was designed for a wider rim, and when I installed it on my narrower rim that was the right width for the 120 tire, the 130 was exactly the same width as the 120 had been, as measured with a caliper. The only difference turned out to be more tread wrap, creating tread that never touched the pavement.
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Old August 9th, 2019, 05:11 PM   #9
Bills dad
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Everything I've read says 3 1/2 wide which is the stock
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Old August 9th, 2019, 05:16 PM   #10
Bills dad
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3.5 to 4.5 inch wide rather sorry.
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Old August 13th, 2019, 02:48 PM   #11
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You may find that with 3.5" rim, that tyre won't be able to roll onto edges. Effectively giving you only 130mm of useable width anyway. An easy swap to 4.0" rim is Ninja 300 rear wheel. Ninja 650R (ER6N) can donate a 4.5" wheel, but will need some machining of wheel and spacers.
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