i am currently using 245 40 17 WL sport RS on my skyline. ok naman so far. i just cant floor the throttle abruptly because i get are wheelspins. but even the previous yokos which are even wider * 255 40 17 also get wheelspins. even on 2nd gear and 3rd gear pulls. on highway speeds, the fastest i had tried the WL sport RS was 170 and i think it was ok. chinese brands are ok, and i heard goodride is their sister company and they share tread designs and even tire model names. if so, im currently using a/t goodride tires on my daily workhorse and so far it is very reliable, never had a flat or even an air leak on these tires. im already using it for almost 2 years and tread is still thick. btw this is what i use on long drives to the province. and i trust it, i always bring my kid. but on the WL RS i am not expecting it to last that long because i intended to have a low treadwear rating tire because grip is more important than tread life for this particular car.