im on 19 and running 245 all round which is a much better option as mine all four wheels are same and i can rotate now every 10k...

On mine i tried at the time of buying my tires tried 265..and there were chances of rubbing even though im on -ve camber and lowered but it wasnt looking nice as setup was not staggered..

humm ok thanks for the info dude,

E-ticket has 275 on the rear wheels right now with no rubbing issues, but I guess it's all down to the camber and width of wheel as well. How wide are your 19s?

mine are stock M35 so 8.5 +50 or 55 offset im running on 15mm spacers and i tried 265 with the setup there was rubbing then stick to 245 all round

Camber is around -1.5...ride is very smooth much better then OEM 18

humm I'm surprised there was rubbing, I'm guessing it could be due to the spacers as well?

I'm just saying this because looking at the excel sheet with everyone's wheel and tire settings there are a few with 265-275 and even 285!! I'm talking about the rear of course

The offset has a lot to do with it. 50mm with a 15mm offset brings you down to 35, which is still a relatively safe offset.

Also, tire width is not always equal. Some manufacturers have 245's that are wider than others at 255 (for example). The width of the wheel it's going in also affects the tires final width.

Ok so as my rims are 25 offset would that make it easier or harder to install 265s on the rear only? compared to having an offset of 50?

I guess its also linked to the rim width mine is 8.5 and stock wheels were 245 so i stick with those...offset is 50 but with spacers its a perfect flush look with +35 :)