In this case it's probably not really the over size tire being the issue, but the way it was originally balanced. You can take a perfectly balanced wheel, mount up and spin a 100 different tires of the same brand and size and find you need to use anywhere from 0 to 25 ounces of lead weight to balance them. General use tires (for us common folks) are not really produced at a high standard, no matter what they say. If you have a wheel/tire with a lot of weight on it on the front end, you're going to experience some bad things. Bias ply tires are horrific in this manner as they constantly change over time, heck even every morning but radials tend to wear true as to how they are balanced, though I have seen a few needing a rebalance over time.
Not too many people do it anymore because they either don't care enough or don't know, but I have a friend who runs a major chain tire store and it is common for him to mount a new tire, balance it, break it down and rotate the tire on the wheel and rebalance it again to try to keep the weight to a minimum. I've seen him pull a brand new tire back off and get another one if that didn't work, just to try and get a low weight balance. Of course this is if the wheel is pretty good from the start. The funny thing, I was taught to do this by my father who ran a service station, and my auto shop teacher in HS as well. But I rarely ever see anyone do it anymore. In fact if you ask, they usually blow you off claiming it's your bad wheel or that the correct procedure doesn't work, etc. etc. So they just throw lead at the tire till the machine says it's good and out the door you go. I've watched guys mount up tires, balance them, and be sure to put the best ones up front just to try to avoid the issue. In fact when I last got my BFG's on my Scout, the guy put so much weight (inside stick on type) on one of the wheels, it balled up against the caliper and locked the wheel up when he tried to back it out of the stall. Turns out it had like 35 ounces of lead stacked 3 rows high. Needless to say, all four tires ended up being redone, coincidently the "correct way" by the store manager.
So yes, I have experienced it in various vehicles at various times. Every time though it was due to either a bad wheel (bent) or an improperly balanced tire.
_________________ All Jeep trails had to first be Scouted.
1978 IH Scout II Lifted, locked, blah,blah,blah. 2008 Jeep Grand Cherokee, Her car. 1992 Ford F350 XLT 4x4
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