Balancing Racing Slicks

[Ed Wright]

You will still find an imbalance you won't find with a bubble balancer. Split your weicght too needs four ounces? Put two front side, two back side.

[Paul Precht]

Originally Posted by Ed Wright

You will still find an imbalance you won't find with a bubble balancer. Split your weicght too needs four ounces? Put two front side, two back side.

That's the way I learned back in the early 70s. I use 4 weights, 2 on each side, bringing them closer or further apart as needed. I still use my old Coats 10/10 and bubble ballance for slicks and trailer tires.

[fordteacherguy]

There is a lot more than balance to fix shakes in tires. Technology has come a long way in tire balancing and rim/tire run out matching. Here is a video from Hunter engineering demonstrating their Road Force Balancer. Note ...this is old technology...we have been road forcing tires for over 10 years to fix non-balance tire shake. I road force all of my slicks and have to re-index most at least once due to their concentricity is not near what a OEM tire has and drag slicks undergo side wall damage from launching that can show up in a road force test but not be a balance issue.

Enjoy! Learn something new!

http://www.bing.com/videos/search?q=...9C2AC5FD52B319

[Don Anderson]

Thanks for sharing this video Brian !!








Don Anderson
M/S #5891

[CMcAllister]

Not all spin balancers are high speed. I have used a Snap-On branded machine with good results. Not sure who actually makes it. I've also used the old Snap-On machine that you spun up by hand with good results. I remember seeing that little machine sitting around in a lot of pro pits years ago.

[tj310]

If you reindex a tire and it makes a difference you have a bad rim IMHO ---Trevor

[fordteacherguy]

Originally Posted by tj310

If you reindex a tire and it makes a difference you have a bad rim IMHO ---Trevor

There are few tires produced that have 0 run-out when they remove them from the casting molds and fewer rims as well. The problems become one of tolerance stack up...two component individually "in spec" that are assembled with individual tolerances aligned may be out of spec as a combined assembly. Todays balancers measure total rim run-out and tire run-out individually and indicate where you can match the assembly for the least run-out ..thereby running smoother and needing less weight to balance.

I was at automotive factory training and told that OEM wheels are intentionally made slightly out of round on purpose to allow tire indexing corrections for overall less total run-out than with a perfectly round rim.