Thread: wheel balance issues tdi

Sounds like a bad batch to me....

have them dynamicaly balance the empty rim and check it for warp and runout while they do that. any deviation in lateral run out of more than 3mm from center (6mm total) is too much and I like to keep radial run out of the beads (not the lip) to less than .5mm

once the rims heavy spots have been identified (they should be less than 5g if you have any) and any rims with radial run out have been replaced get them to refit the rubber

If it doesnt balance up with less than X amount of weight in total and less than Y amount in any one spot have them remove and rotate the tyre on the rim.

X and Y will vary depending on how pedantic you want to be.

X when i do it is 150gm total and Y is 100g as thats the largest single weight available.

For high speed rubber i drop back to 75/30 but get nervous if im near that

Acceptable limits for r16 7.50 rubber (think steel treks like the army use is 300/150

the bigger the rubber the more weight you need to add.

On that note Ive been known (with the owners concent) to trim a little off of the side lugs of fatter rubber and the side biters if I cant get it to play the game any other way. I wont do this on anything other than mud or really agressive AT rubber.


Theres lots of causes for rubber that just wont balance and IF your not happy with the weighting of the rubber a reputable dealer will get you new rubber in.

Just tell them I do a lot of fourwheel driving and constantly change pressure and there is a risk of the weights dislodging the tyres need to be as close to 0/0 as possable before weights are added for safety reasons.

on that not depending on the size of the tyre the pressure you run and the speed you drive at the wheels can be up to 15g out in one spot and you wont notice it.

With split rims its even possable to 0/0 a tyre without any weights if your inclined to spend the time doing it.

now when you say changed do you mean new tyres or s/hand set?

low k second hand set...abt 3000km.
Do others running std disco rims generally have any probs?
Thanks blknight for that response...surely should not be necessary to go to those lenghts tho..
At this stage I havent had a close look at the runout on the rears so what I might do is jack it up and check them out..perhaps the remaining vibration is coming from runout on the rears?
I reckon the fronts are close to good enough now as the guy spent a lot of time on them today, rotating the tyres etc. It was interesting how much differnece a 180 rotation made on one of them..from terrible to almost perfect!

only if you want to get maximum life from your tyres...

By the civvie book 300g total is the limit for standard tyres tho Ive seen that interpreted as PER side

I have heard of there being a bad batch of wranglers, i know a mate had his replaced after he had done a few k already.

my record effort was for my terminal assesment on tyre balancing, 2 days to get it 0/0 using only the allowed amount of weight....

cause it couldnt be done apparently...

you're welcome to come down to wodonga to see if you can better your record Blknight. I will arrange the venue.

Might be down very late this year or early next year, more than happy to spin em up on the balancers there for ya