Pilot sport 4's all round. 18". Cost about £650 fitted. Best tires ive ever used, comes off roundabouts switching position (right to left) safe as houses, they dig in brilliantly under power, given me the most confidence of any tire I've used before including P-Zeros, which were admittedly on a lighter FWD car, so maybe not a great basis for comparison. Regardless, I'd recommend the Pilot Sport 4 in a heartbeat.