Folks,

I brought the 1990 240 DL Estate (Wagon) in for a tire spin balance.

I forgot to direct the tire store yesterday to hand remove and hand install and torque the lug nuts.

So, stewpid, stoopid, stupid me for being mindless then.

After reading all the brickboard posts on tire shops and those God Damned impact wrenches either stripping the tire lug nuts, the tire lug bolts, or shearing the tire lug bolt to wheel hub keyway interface.

I forget the engineering term. The knurled tire lug bolt stud section near the bolt head where it secure (presses) into the wheel hub. Does that help?

Welp, on the vehicle right side (Canadian market passenger side), rear wheel, they stripped, so they say, the knurled section, so they say, on three of them so the nuts won't torque. They spin, so they say.

The tire store said they'd have to tow it or I'd "nurse" it home. I nursed it home without problem back to the crappy parking lot in the trashy complex I miserably reside in. (Ending with preposition intentional.)

I reside in yet another crappy, shitty, trashy apartment complex (where you can hear and smell other tenants to my disgust). One useless garage without power. Two of my three 240s sit in the sun. (Been dressing the leather seats covers with conditioner and hydrants several times.)

So, at NAPA, we have lug bolts for 2.39$ a piece. Surely made in Chinese crappy sell-back-to-the-US crappy steel that may have been your Volvo 240 from prior years.

Yet, if the cause, the knurled section interface between the hub and the wheel lug bolts may have failed. Some research suggests the failure may be on the hub side of that interface as the tire lug bolt suds is a harder steel then the material steel comprising the hub itself.

So, we remove the hub works revealing the hub and:
1. Replace the three studs if that is the failure (I'd replace all five)
2. Replace the hub itself (unscrews from the axle, yes, and replaceable)
3. Finally, tack a strong weld at the lug bolt stud head to bond it to the hub.

I've replaced lug bolts when the thread failed. I've not encountered such an issue like this directly.

Is the tire shop culpable for the repair cost should I take it to a repair facility? I'll probably have to.

It had been a long week, and I was wholly exhausted, and this is why I mindlessly forgot to tell the tire store, as we ALL should, to hand loosen and tighten the lug nuts.

Just say NO to impact wrenches on tire lug nuts! ALWAYS!

Recommendations, please?

Thank you kindly.

cheers,

Mindless Mac Duffed.
--
Mac and Cheese.