Tire balancing, where is best?

Reply

  #1  
Old 09-09-13, 03:08 PM
Member
Thread Starter
Join Date: Apr 2003
Location: Chicago suburbs
Posts: 374
Tire balancing, where is best?

I have a brand new 2013 Chevy with around 250 miles on it. I purchased a lightly used set of Chevy OEM wheels on eBay, and had the local Chevy dealer take my tires off my original wheels and place them on the new wheels, as well as accomplish a wheel balance.

With the car's original wheels, the car was rock solid, glass smooth at 60-75 mph. No vibrations could be felt. After having put the new set of wheels on, I can start to feel vibrations in the wheel at around 50-55 mph. It feels like the wheels are out of balance.

So as far as troubleshooting goes, what should I do? Did I get a bad set of wheels and they'll always be like this? Is it possible the dealer didn't balance the wheels properly, as I "assume" that it's hard to mess up a balancing job with the modern equipment in use today? The website says they have a Hunter GSP9700 but I don't know if they actually used it or what technique they used.

I'm not keen on returning to the dealer for other reasons, so if I take the wheels to be balanced somewhere else, is there a certain type of equipment I should look for or a specific technique? I'd really like to get that glass smooth ride back.

Thanks.
 
Sponsored Links
  #2  
Old 09-09-13, 03:25 PM
Member
Join Date: Oct 2012
Location: USA
Posts: 614
It's possible that you have a bent wheel. Try rotating front to back and see if it gets any better.
 
  #3  
Old 09-09-13, 03:36 PM
Join Date: Jun 2010
Location: Canada (near The Motor City)
Posts: 611
Take it back to the dealer. A technician will (should) check for bent rim and runout when mounting the tires and my dealer always takes the vehicle for a test run before turning it back over to me.

You paid for the tires to be changed & balanced and the dealer should be able to deliver on that simple request.
 
  #4  
Old 09-09-13, 05:46 PM
Member
Join Date: Jun 2009
Location: California
Posts: 214
As for the road test, unless there is an on ramp real close by it isn't going to happen. The tires were mounted and then balanced. If all is good in the world if the tires are balanced then they will be smooth. If they are not then perhaps the bead didn't set right on one of the tires and using a modern balancer the tire is under a hood and the operator wont see the tire spinning so one tire could have a bit of runout due to a bead seat problem. Why would you have an issue with a dealer if they did what you asked and you paid the bill, that's known as commerce. I was a dealer mechanic for 40 years so I know how stuff works.
 
  #5  
Old 09-09-13, 07:31 PM
iceman681's Avatar
Member
Join Date: Jul 2012
Location: usa
Posts: 436
after fixing many bad balance jobs form dealers. i have learned you most likly had a grunt that did the work(low paid entry tech). go backand complain. they have to get it right and not charge again.
 
  #6  
Old 09-10-13, 03:47 PM
Member
Thread Starter
Join Date: Apr 2003
Location: Chicago suburbs
Posts: 374
I'm heading back to the dealer tomorrow. They said they would try to balance them again. Their website says that they use a Hunter GSP9700 as a balancer, and they say it's the best unit out there. Hopefully they get balanced better this time.
 
  #7  
Old 09-10-13, 04:48 PM
Member
Join Date: Jun 2009
Location: California
Posts: 214
I think a new balancer is likely 5 grand now days and they don't miss much in fact they have a road load mode which takes a little longer but they put a load on the tread as it sits and measures any amount of out of round both in the line of rotation as well as lateral flex so when it's done of the machine didn't see it then it isn't there. The mechanic does however have to ask the machine to measure it because it doesn't just do it automatically. You know what I think 5 grand might have been on the light side and then there's the mounting machine that doesn't touch the wheel as most are alloy and many are like 60 series or less so anyway if they have that machine it will find whatever the issue is. Not many independents can afford this type of equipment so despite popular opinions their not always the best place to find resolution. Why do you think the dealers are so damned expensive, our clients wanted free loaners, free espresso, free taxi rides, free wash or sometimes details and donuts on Fridays but the truth being known all that stuff gets real expensive and someone has to pay for it. Good luck with the tire balance issue.
 
  #8  
Old 09-10-13, 07:18 PM
iceman681's Avatar
Member
Join Date: Jul 2012
Location: usa
Posts: 436
hope it works out, and you can have the best balancer in the world but if u put a lazy person that does not know how to use it to the fullest then you might as well head down to your local walmart to have your tires put on. i have worked at a few dealers and its always the same, the low entry techs do the oil changes and tires. so you have to let them know it was not done right, and maybe some one who knows how to "use" the machine will do it right. the world has gotten lazy and cheep. make them do their job.
 
  #9  
Old 09-11-13, 06:12 AM
Member
Join Date: Jun 2009
Location: California
Posts: 214
Not sure that lazy could even apply to a mechanic working in Southern Ca as we all worked on a flat rate system. As for the issue training or a lack of training is more often the usual culprit. My last dealership position was running an apprentice program so I trained the skills of tire mounting and balancing as well as electrical diagnosis and transmission repair so it fell on me to see that everyone had the knowledge to perform their tasks. I tried to make it so the alignment specialist also did the tire mounting and balancing and that department was in my building so it worked, the alignment person was responsible for how the car went and how smooth it was while it was going. The position paid pretty good so he did it well as others wanted the slot. Just doing tires is a lot less glorious so guys would blast through that process alone, get the writers to sell more front end stuff and include tires as a piece of the package. I would believe that any large tire retailer will do a good job as well as that's what they do for a living. I might not go to a tire store for transmission work though.
 
  #10  
Old 09-11-13, 08:04 AM
Member
Join Date: Jun 2012
Posts: 853
The GPS9700 is a road force balance system. It would have found any bent wheel or out of round condition. But the system is only as good as the tech operating it.

Your brand new truck had match mounted wheels and tires. Meaning the heavy spot of the rim was matched to the light spot on the tire. You can see this by the colored dots on wheels and tires on new vehicles. The GPS9700 has the ability to match mount, but the process would be 2 steps for the tech. The wheels you brought him most likely didn't have any markings on them. So the mount was simply a standard mount.

When or if you return to the dealer with the GPS9700, ask to have the tires match mounted to your new wheels. This reduces the amount of weight needed to balance and almost always result is a smooth as glass ride.

This practice is very commonly used in the 2 wheeled community. My bike wheels are marked, and most new tires come marked. Less weight on the rims always translates to less rotational force and a much smoother ride at high speeds. (always obey the speed limit)
 
  #11  
Old 09-11-13, 12:05 PM
Member
Thread Starter
Join Date: Apr 2003
Location: Chicago suburbs
Posts: 374
Well to follow up, I took the car back to the dealer. Apparently when they balanced my wheels they only "spin balanced" them and even though they have the GPS9700 road force balance system apparently they didn't use it (or use the road force part) the first time around. This time, they did use the road force part and the car is rock solid again. I'm kind of annoyed that they didn't do that the first time and I wasted another 21/2 hours today, but they were apologetic and gave me a coupon for future services.
 
  #12  
Old 09-11-13, 12:23 PM
Member
Join Date: Jun 2009
Location: California
Posts: 214
Well there you have it, it came down to education of the mechanic. He now understands what he or she is supposed to do as he likely had to do it for free. Glad to hear it works well now.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes