I visited the Bay 13 site and was surprised to find the the reccomended 4-5K mile tire rotation, and the emphesis on torque specs for wheel lugs. The specs for 19mm lugs range from 90-140NM (66.3-103FP). They also mention a specific Volvo torque wrench for each. I assume this is a pre-set wrench head/socket. Is this so? I've always used an impact wrench, and finished up with a cross rim wrench, so as not to overtighten, but have never heard of anyone actually using a torque wrench to mount tires. Are Volvos this sensative to lug torque? If so, does anyone know the proper torque for the 19MM lugs on the '02 V70 XC? Thanks,Paul
My 850s lugs require 81 lbs-ft. I've read, so that's what I give them... sorry don't know if this is the same for XCs.
Having all the lugs torqed the same helps keep the rotors from warping, according to accounts. I had warped rotors, and they remind you of their condition every time you touch the brake.
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ALWAYS USE A TORQUE WRENCH TO TIGHTEN WHEEL NUTS !!!!!
Sorry to emphasise the point but over tightening and uneven tightening the wheel nuts is the majot cause of brake rotor warpage. There are special torque limiting sockets that can be used with an impact wrench but I just use a standard torque wrench set at the appropriate torque.
200 and 700 series Volvo's torque to 65 ft/lbs
As Matthew has indicated the front wheel drive Volvo's use a higher 81 ft/lbs. Double check this by looking in your owners manual.
Checked with my dealr's service dept. and they use a preset torque wrench which is set at 140NM(103 lb./ft.) The parts dept sells these, which they call a torque stick. It's got the 19mm socket attached.You attach a breaker bar, and it prevents overtightening. $69.00!! No thanks, I'll just use my regular 1/2" torque wrench. BTW, As a last resort, I opened my owners manual to the tire changing section, and they said tighten to 100Lb./Ft. Why didn't I think to do that in the first place? It was interesting to find that the dealers use the torque wrench (stick) when mounting tires. I wouldn't even have the guts to ask my tire store to do this for fear of being ridiculed
I always double check with the tire store to see if they torque the wheel nuts, If they laugh or say "No" I take my car somewhere else. All newer cars are prone to brake rotor warping from over tightening wheel nuts and it is now common practice to torque wheel nuts.