Hi, my 2017 270R has same problem. BMW 391 diff but I cant confirm with caterham which internals it has. I jack car up, spin a wheel and sometimes opposite wheel doesnt move all, or sometimes goes in opposite direction. Car is going back to Gatwick Caterham in two weeks for investigation as well as 310 upgrade; I suspect it is Titan LSD carbon plate fail; I spoke with Road and Race and they think the same. Please let me know if you get yours resolved. PS diff is hell of a noisy; suspect due to bits of shattered carbon plate flying around in diff oil soup!!
