I just got some 33x12.5R15 Good Year Wrangler Duratracs put on my 15" AWC Soft 8 Black Steel Wheels. And when I get up past 55mph the truck starts to vibrate pretty good. This wasn't happening when I had my stock rims on. The vibration will come and go one day it wont happen but other time it will be pretty bad.I'm not sure if the wheels are maybe bent or would not having the correct lug nuts cause this problem or were they not balanced correctly? Any suggestions?

 

sounds like a Balancing and Alignment thing.

 

Believe it or not I have the same issue with my procomp alloys and 33/12.50 km2s

 

mine did this i put on new brakes and it stoped(they was worn out anyway). but it could be a balance issue or your tires could be out of round.

 

The place that put them on did say i need new front brake pads so maybe and the tires were brand new.

 

one that could have happened when the tire where put on if they did not jack the truck correctly they could have caused a slight bend in the frame not enough to cause any issues but enough to cause the vehicle to have a high speed wobble as if a alightment is off this is caused but one side of the wheelbase being slightly longer or shorter then the other side i had this happen to a explorer of mine i finally just sold it and started fresh now i watch anyone that works on my vehicle like a hawk

 

Come to think of it I need brakes too. Might have just found my problem

 

I have the same issue but its my wheel bearing.

 

anything that causes a resistance difference on one side and not the other will cause in theory form a engineering view point but real life is different then paper

 

Wow.. I was honestly expecting a "Hey, my truck vibrates when i hit 92MPH... Why??" (you'd be surprised what some people ask... haha)

Anyways, I would check the wheel balance, and brakes. Could also be a drive-line balance issue, but I have my doubts on that.

First question: When you press on the brakes does the pedal pulsate?

Second: what shop did you have the tires put on at?

 

I will test and see if the pedal pulsates today. And I had a local tire shop do it. Been going the for year and never had a problem.

 

also, make sure ALL the lugs are tight... lol. If theyre not tight, that would also be an issue... haha

 

Update: I took the truck back in today and had them rebalanced and one wheel was a little off which they fixed and now i have no more vibrating at 55+ mph.

 

Sweet! Glad you got it fixed!

 

Yeah me too well I hope that fixed it lol. Knock on WOOD.