Knobby tires' knobs will move around when riding on a hard, ungiving surface like tarmac/bitumen. This moving causes heat buildup in the carcass, which could lead to thread-separation and the tires 'throwing off its knobs'
This problem becomes more severe during (or in combination of): - high speed driving
- under-inflated tires
- heavy load
- when the tire is new and still settling
- when using tires with less/smaller knobs (i.e. more off-road orientated)
I've totally destroyed a brand new Maxxis tire in 250km on the freeway riding at 140km/h. I managed to destroy a Michelin T63 in 1000km with a heavy load.
Not knowing your circumstances, it's very difficult to say in what category you fall, but (sorry to repeat what was already said): - check your tire is the right size for the bike (i.e. KLR650 should be around 130- narrower tire will overheat faster under load)
- type of tubes
- correct pressure
- DOT tire and not an off-road carcass
- check your load on the bike and the load rating of the tire (bike + you + luggage =???kg). Most 130 knobs are only rated to about 265kg or even less.
- check your speed: slow down and see if the tire still overheats
- check your climatic conditions- if the bitumen is around 60-70dC, your tire will be even hotter.
- or a combination of the above (death by a thousand cuts and all that)
http://www.maxxis.com/MotorcycleATV/...e_load_indexes
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Squily
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