Just put my 2nd set of H3 factory wheels (and GM sensors) with 315-75-16 BFG MT KM's and on first drive I can hear a medium loud ticking sound. It seems to be coming from under and in the middle of the H3. It gets slightly louder at 40-50mph. And I can not hear it when going under 8 mph.

It never made this noise before and made the noise on first drive after tires were installed (by me). Also, no low tire warning light came on and all wheels have new sensors. Only other thing is it doesn't make the noise when turning left or right. Any ideas as to what it is?

 

Only thing I can think of...See if the tires and wheels are clear of everything including inner brake shields..you may have bent the shield putting on the tires and they are rubbing on the wider tires or wheels someway..

 

DO have a rock in one of the tires

 

Are the stickers still on the tires?

 

Thanks for the replies. I was about to make an appointment at the closest Hummer dealer 100 miles from here but decided to make a quick call to the tire shop, Discount Tire. They said to bring it in. They found the the wheel weights taped to the center on the inside wheel was hitting the calipers. They rebalanced all the tires with outside weights and set the air sensors using a hand help transmitter.
Got a lot of compliments on the way the H3 looked with the 315's. They really fill out those large wheel wells. What surprises me is that there is no rubbing lock to lock or anything else. Then again I have not yet taken it off road with these tires. It rides quiet still but is more wobly (sp?) due to the extra rubber on the thread. Last gas mileage city and off road was 17.4 mpg and will look carefully at the change these tires make.
Again, thanks for the suggestions and help!

 

Hey got pics? Would love to see your truck with the larger tires - what did you to get those larger tires in? adjust t-bars, levelling kit, or suspension lift ? Lets see some pics!

 

The larger tires really change the proportions of the H3 for the better. If someone would show me how to post pictures I would be happy to. The tires fit fine without any torsion bar adjustments or any other changes. No rubbing yet. Paid $175 each mounted at Discount Tire BFG MT KM's. Just took some photos tonight but do not know how to post.

 

Try this link Skeeet

https://www.hummerforums.com/m_205/tm.htm