take a look at the vibration of the front fork. If you have somewhere to see the front wheel axle…and compare it to some fixed point on the chassis, you will be able to see if it vibrates. If it vibrates, that is probably the cause of the most wear (compared to the use you gave the S10). On the S10, I see vibes. Another cause of front wheel wear could be the resistance to acceleration of the rear wheel, until they are equal in rotation, the front wheel must want to drag (perhaps hundredths/thousandths)...but enough to cause friction and wearI still don't fully understand why front tires go so fast on this bike. I don't feel like I use my brakes any more than I did on the Tenere, I fully endorse spirited engine braking. I try to give the front tire a rest reasonably often. The bike weighs less than a Tenere. Not sure there's a good explanation on why they go so fast.
If the 1290 accelerates faster than the S10…there will be more weight transfer in less time…there will be less support on the front wheel…and if the resistance ( by weight and diameter) of the front wheel were the same on both bikes…the one on the 1290 would tend to drag more time
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