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I have a 1996 kaw ex500 thats about to get new tires. The stock rear is a 130/70-17 and I want to know if a 140/70-17 would help or hurt handling and traction for aggressive riding. Thanks!:confused:
 

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The Toad
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Only way to find out is try. However the sizes are so close that you probably won't notice much difference, if any.
 

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There are guys racing a 150 on that itty-bitty 3-1/2" rim - but IMHO that's JUST a bit too "pinched".

When I was messin' with it, I determined the 140 would probably be the widest I would spoon onto one, so I bought a set of Shinko Podium 006's and did so.

Worked pretty good, no adverse problems, other than it's STILL almost too-wide for that rim. (struggled with mounting it).

The biggest problem you will find WILL BE in actually finding a 140 in the brand you like - I chose the Shinko's on the recommendation of a friend who described them as "essentially an old Yokohama radial-pattern with modern rubber compound".

My only complaint of them, is the Nylon belting - once you got them real-hot, then parked the bike - they would take a "set" and feel "unbalanced" at first when you started riding-again, until the tire got warm. Stuck really well in corners, though. I'd say an 8.5 out of 10.

More than adequate for street-riding, probably good for an occasional Trackday (but I never tried them out on a track).

EDIT:

Oh yeah - the 140 Shinko "slightly" lowered the back, due to the lower-profile. As this was the stubby-legged Wife's bike, this was a GOOD thing for us. I rode it several times, didn't notice any adverse handling from that, but I had already lowered the bike using dogbones and installed Gen-Mar risers and raised the forks in the triple to keep it level. Made it really-easy for me to drag parts, The Wife was not-so agressive a rider, though.
 

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Aging Cafe` Racer
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Personally I'd put a 130 on there if that was the stock tire. A 10mm wider tire isn't going to help in anyway you'll notice and will probably cost more if you can even find one. Why screw around?
 

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Ask FOG. Snicker, giggle...
He's baiting you........

(but FOG is quite-possibly THE Great EX500 Prophet - and this is not typed sarcastically)
 

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Personally I'd put a 130 on there if that was the stock tire. A 10mm wider tire isn't going to help in anyway you'll notice and will probably cost more if you can even find one. Why screw around?
Probably because there are not very many choices in the 130, either. Or, as in the case of The Wife's EX - we were looking to get a bit-more rubber on the road and reduce the ride-height whatever teeny-bit-more we could.

With the lower-profile, it was substantially-more rubber than an extra 10mm - almost made the EX look like a real motorcyle rather than a bicycle............... (140 is the section-width, not the tread-width)

Even if it didn't actually help her, it helped in her mind - and that's really what it was all-about.
 
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