I have a RR Sport 2007 and need to replace my tyres
I have 20" rims, 275/40R20 106Y
Any advice appreciated.

Has anybody done any testing regarding performance?

Michael 2007 Range Rover Sport TDV8 HSE
Java Black
2003 Mercedes SL 350 Navy Blue

I found these to be a very good tyre.
http://www.rrsport.co.uk/forum/topic41455.html

Steer away from continental tyres, they wear on the edges.

Try Tyreleader.co.uk they deliver and stock a range of tyres. I replaced my contis with Pirelli Scorpions and was happy with price etc. Current 2010 Range Rover Sport HSE with the usual toys: timed climate, Rosen headrest screens, tow bar with twin electrics, Blackvue HD cam
2008 Seat Leon K1
2012 Audi A1 2.0litre Black Edition TDI
2004 Audi A4 convertible
2004 Audi A2 TDI

I fitted general grabber A/T's 275/45H20 got them from Devon 4x4 good price and service, cooper Xeon LTZ's are another good tyre but they only do an R rating. Because mines a TDV8 I wanted the higher speed rating of the grabber. 2008 G4 RRSport TDV8 current
2009 TDCi 90 current
2018 Discovery 5 HSE lux current
1994 Dakar current

After posting just saw your also in a TDV8 then go for the H or higher speed rating. The way I see it if anything happened if the tyres are the correct rating it's one thing less for the insurance companies to use as an excuse not to pay out.. 2008 G4 RRSport TDV8 current
2009 TDCi 90 current
2018 Discovery 5 HSE lux current
1994 Dakar current