EBeast

Will a normal diff when floored leave two tyre marks. I did a test today on a road. I floored it and spun the wheels. I came back and checked it out and there was a tyre mark from each wheel. This was in a manual by the way. Does this mean i have a limited slip diff. It wasnt a long mark just about 3m long for each tyre.

Zomwit

Yep, that means you have an LSD

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Bass Crazy

It is most likely LSD, however, single spinners can do this sometimes as well, and LSD diff can sometimes leave only one mark if the clutches slip.

To be 100% sure, jack up both rear wheels at the same time with the car in neutral, and park brake off. Turn one wheel. If the other turns in the same direction, it's LSD, if it spins in the opposite direction, it's a single spinner.

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EB XR8 5SPD

some will also have a sticker inside the boot telling u what diff is in it
and a metal tag off the diff centre with the ratio on it

ben

you wont always get two tyre marks, just when theres enough rear wheel kW for both wheels to do some damage

like an LSD will have SOME power to BOTH rear wheels at all times, but if say 80% of it is on the left, then only the left wheel will spin out, so dont use this as an indication

Grass is a good way to test it :)

ben