Brand new brand V4S with wire wheels and tyre pressure monitors fitted prior to delivery. Front wheel no balance weights. Handlebars shimmy / wag at all speeds between 20 & 70 mph, worst around 50. Anyone else experienced this? Is your front balanced? If you have the same setup how much balance weight was required? Fairly sure it’s not brakes and there’s no strange feeling in the headstock.
I had TPMS sensors fitted into my cast wheels and there are loads of balance weights. Down to the dealer to install the sensors and then rebalance the wheels.
That's poor design... are the wheels tubeless? Logical thought would be to balance the wheels before fitting tyres with the weights on the inside of the wheel or that the wheel should have been designed to anticipate this?
Wheels are tubeless, dots are correctly aligned. Unknown but very much doubt the wheels are balanced prior to tyre mounting as they’d need to be done again after. Back wheel has 25g one side and 20g the other side both quite near the valve Front wheel none.
Easy enough to check if you’re handy enough with spanners. Remove the front wheel and use the front axle between a pair of car axle stands. Hold the wheel still in any position and let it go, if it rotates on its own the heavy point will settle at the bottom. Add weights at the top until you can put the wheel in any position without it rotating on its own to a heavy spot. Very crude method but works and I’ve had no shimmering on any of my bikes using this method upto well into autobahn territory . Wheel weights can be found on Amazon cheaply enough too. EDIT to add I missed the bit about being brand new. Straight back to dealer if local enough and get them to sort it for you.
Unfortunately I’ve no axel stands but have got a few old weights so I might do a little trial and error as to positioning etc, should be easy enough to feel any difference. Not scientific but how much balancing weight on tpms fitted wheels are owners seeing?
Maybe just take it back to the dealer and tell them to sort it, and demand to know why this wasn't dealt with during PDI? You've presumably just spent the thick end of £25k or signed up to a PCP for that amount and you're proposing randomly sticking weights on to see what happens? Not my bike or my money, you seem like a very understanding chap.
Dealers 60 minutes away and it’ll be back there in a few weeks for first service. In the meantime after a little investigation my best guess, and it is a guess is that the valves were swapped over and both wheels left unbalanced. Most tpms sensors weigh between 27 & 40g so that’s plenty to throw a wobble. I’ve put 30g opposing the front valve to see if that reduces the shake.
Certainly worth a go until they can sort it properly. Just remove bay weights you add before taking it in, some dealers don’t need an excuse to get funny (some not all!)
When I picked up mine from new there were no weights on the front wheel. And there were no issues. (Cast wheels)
Just checked the balance weights on my cast wheels (with TPMS sensors installed). The front wheel has 75g directly opposite the valve and the rear has 65g not quite opposite the valve (as that's where the rear colour band is). I know when I had a set of Michelin Road 6s fitted more balance weights were added in the same place. I would have thought an out of balance wheel would have cause vibration rather than "Handlebars shimmy / wag". The only time I've a similar problem it was resolved by loosening off the front wheel spindle and re-torqueing using the correct procedure (on a 1200 Multi). The procedure for the V4 is: o Fit spacers into wheel o Fit wheel & insert shaft, then washer and nut without tightening o Refit callipers with spacers, torque to 2 Nm o Pull the brake lever many times o Hold brake lever to the bars and toque to 45 Nm o Tighten pinch bolts on right side to 10 Nm (1-2-1 sequence) o Torque shaft nut to 63 Nm o Loosen pinch bolt screws tightened above o Set the wheel to the ground and bounce the front suspension a number of times o Torque all pinch bolts to 10 Nm (1-2-1 sequence) This is very similar procedure to that for the 1200/1260. The only difference I noticed was that the pinch bolts are screwed in from below.
Thanks. I’ll try the retighten etc…. those weights are fairly convincing though. so imagine fitting the weight of tpms to one side and nothing to the other.
Front wheel shimmy / wobble update. Problem which was really quite bad has been resolved at first service. The front tyre has been changed under warranty and now the bike performs flawlessly. Dealer said that the culprit tyre had no rigidity in it, so fault lies firmly at the doors of Pirelli.
Always great to get a conclusion on these threads. Thanks for posting and enjoy the wobble-free ride!
