[RK250]

Bike is a '97 M750 of which I personally mounted a set of Pirelli Diablo Stadas. I hadn't noticed the front rim prior to the new tire, but the previous was the original Dunlop. I'm quite positive the previous owner never crashed, yet the front rim on both sides is wavey. Yes, I tried waving back, but it is still waving at me.
Questions are:
1. Could it be possible that brembo makes wheels with a roll out tolorance less than perfect? We're talking a couple of wavey sections of around 1-2mm. Tire hold air just fine and tire spins nice and true.
2. The Pirellis mounted really easily. I didn't force the issue at all, I think?? Are the Brembo wheels so cheezy that they can bend with the force of hand mounting tires? There isn't a scratch on the rim at all.
Has anyone else noticed this on an older Monster? Should I not worry about it? It is slight, but nonetheless not perfect.
Thanks.

 

[Norm]

Somebody hit a pot hole, or curb, or........
The rims aren't particuraly soft, it takes a pretty good wack to bend them - you should see how easily BMW wheels bend. If the ride well & it doesn't bother you, don't worry about it. If it does, you can either send them out for repair or wack them with a hammer & 2x4, depending on how pretty you want it to be. I try to run my wheels within about .015" but it's not uncommon to find new wheels out as far as .040".

 

[funkuncut]

A Ducati mechanic told me that the Brembo wheels are soft as cheese and reckons that most are out of true by now - speed humps can distort them apparently. You can bet your life that if Brembo make wheels with sloppy tolerances (and I'm not saying they do...) Ducati will take them and stick 'em on Monsters! The advantage of a wheel that distorts easily is that it's not too difficult to bend it back again.

 

[RK250]

Never eat anything bigger than your head? [thumbsup] Got it!

Yeah, the bends are actually greater than the 1-2mm I had mentioned before. They're more like 3-3.5mm. Weird.

So, any tips on where to send the front? Maybe with a rubber mallet or a piece of wood and a bigger hammer, remove the wheel and try to make corrections? It rolls fine, but bothers me that it is off.

Thanks for the comments...and watch that diet!

 

[Mark1305]

+1 on the comments by Norm and the others - they are soft enough to bend slightly from potholes. The upside to that is not only that they are easy to bend back, they are less likely to crack or break catastrophically when they strike a curb or pothole.

I found a pretty good ding in one of my spare wheels. About 4-5mm on the bead portion IIRC, and amazingly I couldn't really feel it on the road. I happened to have some 1 inch thick MDO plywood cut to a 17 inch radius from making my tire changing stand. Pretty close to the curve of the bead seat on the rim. I used a section of that as a buck to hammer the rim against and alternately used a large panel-beater's shot bag for backing and hammered away on the ding with a soft mallet until the wheel was visually true again.

 

[funkuncut]

You could get it checked by a specialist - depends where you are ( I got mine done at Hagon in the UK & they're very good) My front wheel was out of round and also off centre side to side (see, I know the fancy tech terms...)by about 5mm and they fixed it. Mind you, it's probably bent again by now as I live in London and most of our roads were deemed too rough to be included in the Paris - Dakar.......

 

[Demoni]

I say use this as an excuse to go buy some new lightweight wheels ;D