Maintenance & Technical > KX500 Original

18 inch rear wheel Vs 19 inch rear wheel ?

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gowen:
19 handles better than an 18. It is a lower profile. 18 gives in corners at a track. It depends on the ride.

kiwikx500:
Very interesting,i thought the 18 would be lighter and it would be better around a tight motorcross track - looks like i might be best changing to a 19 inch in time (prefer original anyway) if the only main advantage of the 18 is in a rocky desert - none of them around here - as murphys law would have it,its the front hub that really needs replacing with its shot spokes,the 18 rear in good condition,cheers

gowen:
18in. tires have more rubber and are taller, so have horrible give in the corners compared to 19s. I noticed a huge difference with I changed to an 18 on my 500. Not in weight but in corners. I'm a 19 fan for MX and for outdoors peroid.

Polar-Bus:

--- Quote from: kiwikx500 on April 30, 2006, 09:20:44 PM ---In what areas are one better than the other over  ? 8-)

--- End quote ---

I've run both, and generally speaking 18's are preferred by enduro guys for a more forgiving ride over rocky terrain. 18's generally offer a larger "aspect ratio" which means more flex in the sidewall. 19's are stiffer, and more accurate feel railing through rutted berms. At my amatuer level of riding, i don't notice a huge difference between the 2, but there is different behavior. 

Paul:
When I raced Open Pro out here in the desert I ran a 20" front and an 18" rear. Gotta love the sidewall in a 125+ mile race over the nastiest crap in the desert ;) I don't MX so I don't have a need for a 19".

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