Thread: vibration at 80kmh

hi guys

I have recently changed my wheels and tyres and have this annoying vibration at 80kmh. they are "apparently" balanced with staun internal bead locks. Has anybody had any experience with setting these up? I am at the stage of replacing all steering components but before I do I thought I might check if any body has experience with the internal bead locks. As I think these are the problem?

Originally Posted by jem510

hi guys

I have recently changed my wheels and tyres and have this annoying vibration at 80kmh. they are "apparently" balanced with staun internal bead locks. Has anybody had any experience with setting these up? I am at the stage of replacing all steering components but before I do I thought I might check if any body has experience with the internal bead locks. As I think these are the problem?

i have the same thing with my 2000 defender.

recently had a wheel rotation and balance from ace tyres in tingalpa these guys are 4x4 specialists have always taken my 4x4s to them theyve always done good work.

i am running a 2" lift and 33" BF goodrich on steel sunraysias

something worth considering though: i have been told by defender owners is that its propshaft angles. i.e the change in propshaft angles from fitting bigger tyres and lift throws out the factory geometry of the propshaft, the front is affected the worst creating the wobble at certain speeds. The defender runs a single kardan joint propshaft which doesn't cope with the geometry change, apparently switching to the double kardan joint will fix it. i havent bothered as yet, i did see a used prop with double joints on ebay for a good price but couldnt justify the expense at the moment. dont know how on the money this is, its just what ive been told

from rimmerbros in the uk

"When a Land Rover is produced the angle of the propshaft in relation to the two end flanges is carefully calculated in order that the vibration inherent with universal joints* is undetectable. The universal joints at each end of a propshaft are also set out of line, out of synchronisation to control this vibration, this is known as phasing. Lifting the vehicle by raising the suspension alters the propshaft angles which often causes severe vibration. Aggressive mud tyres, noisy engine and transmission and the slower speeds associated with hard core off road vehicles usually masks the vibration and drivers often tolerate the additional drone or rattle from the shafts on overrun. A more road biased lifted Land Rover will most likely find the noise and vibration too obtrusive and will be keen to rectify it. The most effective way to eliminate vibration is to fit a propshaft with a double cardan joint** at the gearbox end. Even Land Rover found this essential on the Discovery 2. Double cardan propshafts are a successful vibration cure on vehicles lifted around 2?. Beyond 2? even the double cardan joint cannot always accommodate the angle without vibrating. *Universal joints working at an angle speed up and slow down during rotation. **Double cardan joints have two universal joints joined by an intermediate shaft, the joints are phased or synchronised with each other which overcomes the speeding up and slowing down of a single joint thus reducing vibration. It is a common misconception that fitting a wide angle propshaft will cure vibrations caused by raised suspension. The cause of the vibration is the angle of the shaft in relation to its end flanges, fitting a wide angle shaft does not change the angles. The vibration may seem reduced but this will be coincidental with a new heavier shaft in perfect condition."