Hi Paul,

I have used www.mytyres.co.uk in the past when I bought a full set of Continentals which wore out after 10K!, but I realy recomend this company. Prices are same as blackcircles but they will match if any higher. I have identified my next set of tyres for the Xfire, which both these suppliers have, so you could, as an excercise compare prices. The tyre is a Falken 452 which was around £100 last time I looked. These have a very good reputation for wear and grip, and rears are also available at approx £140. They also do them in size 275 x 35 x 19 rear if you wanted go a bit wider. These tyres have a good rim protector as well. I had them delivered to home and took them to local fitter who charged £20 fit the lot.
Good Luck!
Steve