I fitted Toyo T1-R’s all round to mine recently (only use it on the road) and once I got used to the lack of firmness generated by the AO48’s, the car is much more fun as it “lets go” progressively at much lower speeds (although probably still too high for the road?).
My T1rs lasted all of 3k miles Mainly due to 2 Walshy days and 5 activity days at North Weald. The middle of the tyre is like new , just the edges down to slicks.