Hey all,

well its a hard 1 to explaing so bare with me, when im driving 70mph+ on the motorway i feel this vibration through the steering wheel every 2ish secs, its like i go over a smooth then rough part of road but every 2 secs without fail. ive had a solid flywheel conversion if that could be the prob but im just grasping @ straws, i think its related to the revolution @ this speed, if anyone can help please reply as its driving me mad.

thanks Marc

Check front wheel balance first. If each wheel is a little out of balance, the errors will alternately cancel and add due to the slightly differing rolling radii.

rotodiesel.

Thanks for the reply, I've had cars when the balance is out & it's a constant shake but this isn't even though it's @ the balance shake speed, so can you get a balance shake that is about 1-2 secs constantly apart? I've never in all my driven years felt this before.

It depends. The front wheels are linked by the steering rack/trackrods, so any shake will be transferred from one side to the other.

I have met cases of alternately cancelling and adding vibration due to the rolling radii being slightly different. Check the wheel balance first.

rotodiesel.

Thanks roto will do I need some new tyres anyway on the front, when it's done & give it a drive & give you a report.

Marc

I'd agree with Roto that this is a certain possibility - and it's the cheapest fix too. I've had similar symptoms once, many years ago - got this slight thrumming vibration every 2 or 3 seconds when blasting down the motorway. Didn't effect the steering wheel, I could just feel the vibration through my feet, but it cleared as soon as the speed dropped a bit. Turned out to be the tread of a remould on the rear axle starting to come away! Scary

Edited 28 February, 201214 yr by sidewaze samm

I had this some time back and it was caused by a siezed front brake caliper.

I have an infrared temp probe and the "good" disk was 45°c and the bad..........285°c. So if you haven't got any thing like that to measure it with, just put your hand NEAR to disk/wheel and see if there is a marked difference in heat coming from them. DO NOT TOUCH THE DISKS JUST IN CASE!

The vibration was caused by the disk warping.

ah101

Well I still haven't sorted the problem as I've had to much work on, but I think it could be down to the front passenger wheel or tyre, it has a very slow puncture & I've noticed the side wall has some cracking, I will get a new tyre, tracking & balance done as it could be that which is the problem, it seams to be when I hit 60mph +. Thanks for the replies

Try new drop links as a cheap fix.