I have a 2017 4WD Tundra. Per the owners manual, the torque for the alloy wheels is 98FP. I also have a set of steel wheels that I use in the winter. Per the manual, the torque on these is supposed to be 154FP. When I went to the dealer for the annual "free" tire rotation, they stripped all 20 lug nuts. They told me it was caused by me over torqueing the lug nuts. They said steel wheels should only be torqued to 100FP. The owners manual clearly says 154FP. Any ideas why the discrepancy and what do you think the torque should be?
Yea, that much torque could deform (break) aluminum wheels. Its a 4wd, wheels need to be on good... hence the increased torque (proper amount) for steel wheels.
Here's what wasn't explained, " we got nice aluminum wheels but don't recommend their use for heavy off road 4wd needs, use steel if this is your application". So if you drove at say 10 mph all the time, a torque value of 20 would be perfectly fine and even softer metal wheels could be used (hypothetical as example).
Does this make sense? Just my opinion so... block of salt.
As for the dealer, don't accept the answer and keep bugging them and showing them info in the manual... at least lug bolts/studs are cheap and easy.
And... what idiot at the dealer would strip a couple studs/nuts and continue on to do so for all 20! boggles my mind...
Now, here's where they may be right... get your torque wrench calibrated ; )
I use the steel wheels for winter snow tires and so the alloy wheels are not subjected to the road salt. The torque wrench is fine. But what I wanted to know is whether the 154FP value is the correct value. Per the dealer "no", but per the manual "yes". So what is the right answer.