lee_28 Posted September 11, 2012 Report Share Posted September 11, 2012 hi all, i noticed my michelin rear trials tyre has a directional arrow, does this mean i cant rotate it to gain a sharper edge or do you find the directin doesn't mater? thanks Quote Link to comment Share on other sites More sharing options...
pindie Posted September 11, 2012 Report Share Posted September 11, 2012 Techincally yes but in reality no. I don't know anyone who does not rotate a trials tyre. It's not wise on a road bike or car directional tyre but you'll be fine on a trialer. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted September 11, 2012 Report Share Posted September 11, 2012 agreed Quote Link to comment Share on other sites More sharing options...
blocky Posted September 11, 2012 Report Share Posted September 11, 2012 As long as you are not going to get the bike MOT'ed as it will/should fail Quote Link to comment Share on other sites More sharing options...
b40rt Posted September 11, 2012 Report Share Posted September 11, 2012 As long as you are not going to get the bike MOT'ed as it will/should fail Unless the writing gets buffed off, by rocks etc ! 1 Quote Link to comment Share on other sites More sharing options...
lee_28 Posted September 11, 2012 Author Report Share Posted September 11, 2012 thanks for your replys Quote Link to comment Share on other sites More sharing options...
jsp Posted September 11, 2012 Report Share Posted September 11, 2012 invest in a sealy tyre bead breaker, cost about £30 but you can spin a tyre in about 10 mins jsp Quote Link to comment Share on other sites More sharing options...
0007 Posted September 11, 2012 Report Share Posted September 11, 2012 I have been wondering the same thing and I would like to know why the tire is directional when the tread is identical Some tires have a wrinkle wall that lets to tire flex or sort of collapse when driven in the correct direction adding traction Drag race cars are a good example, my Tryall trials bicycle tires are another, it's very obvious when the tire pressure is low I don't know if Michelin does this as well ?? Any tire experts on here? Quote Link to comment Share on other sites More sharing options...
lineaway Posted September 12, 2012 Report Share Posted September 12, 2012 The michelin has directional and a balancing mark (dot). The directional does not seem to have a purpose. If you are a top rider rotating the tire for a one day event does have a purpose. If you are rotating to extend tire life you are actually just wearing it out faster. Rotating the tire will wear the height of the knobs faster, which means you will need a tire sooner. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted September 12, 2012 Report Share Posted September 12, 2012 except we rotate our tyres so we have a sharpe edge. Quote Link to comment Share on other sites More sharing options...
copemech Posted September 12, 2012 Report Share Posted September 12, 2012 except we rotate our tyres so we have a sharpe edge. Ant thus the resulting question: Which edge is more important really? It seems logical that surface area would relate to grip on acceleration? Quote Link to comment Share on other sites More sharing options...
zerorev3rev4 Posted September 12, 2012 Report Share Posted September 12, 2012 in the uk riders generally rely on the sharp block edge for grip in wetter conditions once the edge is worn off the tyre aint much use hence the need for turning to regain that new edge the knob can be tall but no sharp edge its only good for practice ,, try rubbing your hand against an unworn edge then a worn edge you will feel the difference Quote Link to comment Share on other sites More sharing options...
motovita Posted September 12, 2012 Report Share Posted September 12, 2012 I have been wondering the same thing and I would like to know why the tire is directional when the tread is identical Some tires have a wrinkle wall that lets to tire flex or sort of collapse when driven in the correct direction adding traction Drag race cars are a good example, my Tryall trials bicycle tires are another, it's very obvious when the tire pressure is low I don't know if Michelin does this as well ?? Any tire experts on here? I have been wondering the same thing and I would like to know why the tire is directional when the tread is identical Some tires have a wrinkle wall that lets to tire flex or sort of collapse when driven in the correct direction adding traction Drag race cars are a good example, my Tryall trials bicycle tires are another, it's very obvious when the tire pressure is low I don't know if Michelin does this as well ?? Any tire experts on here? I've always assumed that it's because of the joint in the fabric of the tire. Most tires (not Dunlop) are made of flat fabric so there is a joint where the fabric ends overlap. I've never heard of any one having a problem running one backwards though. Quote Link to comment Share on other sites More sharing options...
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