Wheel Balancing - UncleR
I'm just about to get a set of used BMW alloys (I've read the previous threads about checking condition etc.). I was wondering whether I should get them re-balanced before putting them on my car, or is this unneccessary if weights are already present? The wheels are exactly the same size as my existing ones.
Wheel Balancing - Dynamic Dave
I take it the alloys have tyres fitted? If not, then you'll need to get them balanced once you've had the tyrss put on.
Wheel Balancing - UncleR
Oh yes, they have tyres fitted. Otherwise, as you say this would be needed anyway. I just wanted to know whether it would be worth it for the small cost to have them re-balanced or whether there would be no point.
Wheel Balancing - Dynamic Dave
Sorry, didn\'t mean to come across as patronising. It\'s just that some people have this misconception that it\'s the wheels that cause imbalance, not the tyres fitted to them.

2 ways of looking at this.
1. Fit them and see if ok - if not get them balanced.
2. Take them to be balanced and the garage charge you for letting you know they\'re ok and don\'t need balancing after all.

Personally I would fit them - if not balanced, drive down to nearest tyre garage and get them done.
Wheel Balancing - UncleR
No offence taken Dave. Thanks for the advice which sounds sensible.

Wheel Balancing - Alan
Why do they always balance rear wheels these days. Going back 10 or more years ago it was said only the front had to be done. I wonder if it's realy needed on the average car that does not do high speeds.
Wheel Balancing - Dynamic Dave
Why do they always balance rear wheels these days.
I wonder if it's realy needed on the average car that does
not do high speeds.

All the cars I've owned - apart from an Allagro - have needed their rear tyres balancing, otherwise the car[1] vibrates at speeds greater than 50mph.

[1] Not the steering, but the car in general.

Wheel Balancing - Dizzy {P}

I can't remember ever *not* having my rear wheels balanced but I agree that out-of-balance front wheels were more noticeable than O-O-B rear wheels on older cars. I assume this was because these older cars usually had live (rigid) rear axles so there was a lot of weight to dampen the inertia of an O-O-B wheel.

Now that we have independent rear suspension, and unsprung weight is kept as low as possible, any O-O-B can be just as severe with the rear wheels as with the front. My own car suffered very bad vibration after I lost a balance weight from the rear, and this was at speeds of around 55-60 mph.
Wheel Balancing - Vansboy
Are the wheels you're buying still on the doner car?
If they are, it's a good idea to re-fit in same positions on your car.
This way, the tyres will have been 'run in' & continue to wear in the original, one direction, they have traveled.
They may be uni-directional, anyway, just look for the arrows on the sidewall,these will show which way to fit, if they are.
Otherwise, try running your hand around the tread edges & feel direction of any feathering.This will help tell you which way they were on the car, before.
If they're expensive tyres, to replace, well worth the few £££ balancing & tracking your steering, while you're at it.
Don't forget the required pressures may be different on the alloys too!
Wheel Balancing - UncleR
Thanks for that. Unfortunately they aren't still on the donor car. All I know is that they are Michelins but not sure of the exact type, also I think they are 205/60/15s so not particularly cheap to replace!

On further thinking, I might get them re-balanced and at the same time get a friendly garage to stick them on at the same time!

Value my car