Hi All, thank you in anticipation, my RX8 fitted with Nissan SR20, Greddy TD06 Turbo Engine, also fitted with LPG tank in the boot on the shelf as far forward as possible, as well as lowered suspension, 265*35*18 Handkook Ventus V2 Concept high performance tyres rear, 245 front. On reaching speeds of 130 kilometers per hour, the rear end sways side to side from centre.

Other wise the cornering is very good. Running tyre pressures front 32, rear 30 psi cold.

Would a lip spoiler or other help solve this problem, or any other suggestions.

The car overall I am more than happy with, getting 9.5 kilometers a liter on a long run, excellent oil pressure, no need to top up between oil changes.   

Thank you.

Regards Tom

i would check if ur wheels have been bent, or the toe for the rear.

 

it should not sway.....

what suspension system are you running and who is doing the setup?

Check your suspension bushes.  Once you let Thais modify your car you could be in for some surprises.