The go-to tyre a few years ago was the Toyo Proxies TR1 for Plus 8's and Roadsters, I had a set on the 3.0 but when they needed replacing Toyo's of the correct size were elusive, so I read lots of tests and went for Continental Premium Contact 5 (think it was 5) they handled as well as the Toyo's and didn't flat spot when stood for a couple of weeks like the Toyo's did
