transmission warming, wheels off or on?

[eastlmark]

Probably a complete amateur question but... if warming transmission (EG running the driven wheels off the ground) should you keep the wheels on or not or does it matter? I am probably thinking from a safety point of view but not sure what's more dangerous, spinning tyres or spinning bare studs. Obviously car will be safely on stands at the time but if the very worse happened then surely safer without wheels?

[eastlmark]

carl_w said:

As you know I'm no expert, but surely it will take longer without the mass of the wheels and tyres connected?

You mean warming up? Yes I guess so and I wonder what the effect of having no mass on the end of the drive shafts will have. However, I used the term warming up but really need to run the drive train to check a few things. The reality of a race car is you cannot run it up the road to test work you have done and to turn up at a race and find an issue straight away is an expensive way to find out.

[eastlmark]

BertBert said:

Interesting. What car needs the transmission warmed?
Bert

Not so much warming, I used the term loosely as explained earlier, more that I need to run the drivetrain to check a few things.... and it will be at my workshop rather than in the paddock.