TR6 Loose wheel nuts after torquing

[steveg]

Yesterday I'd had a stock (steel) wheel off to check something on the left rear brake. Installed it with 70 lb ft torque. Manual recommends 60 - 80 lb ft.

Today the same wheel was loose - most of the nuts had loosened to a few lb ft.

Today I re-torqued to 100 lb ft - more than the recommended 75 - 85 lb ft for a 7/16" stud.

Is there something special about these wheels? Is this a known problem?

Do I need to clean the studs and use loctite on them?

 

[poolboy]

Sounds unusual to me...Are the studs too long for the nuts and the plastic washer (5 & 6)..and in fact are they the correct lug nuts ?
And are there the center hub's (8 & 9) ?
https://mossmotors.com/triumph-tr6-250/wheels-tires/wheels-wheel-accessories-tools

 

[steveg]

Sounds unusual to me...Are the studs too long for the nuts and the plastic washer (5 & 6)..and in fact are they the correct lug nuts ?
And are there the center hub's (8 & 9) ?
https://mossmotors.com/triumph-tr6-250/wheels-tires/wheels-wheel-accessories-tools

I must have got one of the nuts hung up on the plastic hub cap, which is evidently possible to get slightly off center. Will report back after a few drives with the re-torqued wheels.