I've done a number of searches on the web, but so far have fallen short of finding the info I am after. Does anyone know the offset on the 19" stock 997 GT3 RS alloys and whether there are any issues fitting them on a 996TT?

Thanks

Thanks David, this definitely helps from understanding the how the wheels would sit, but I'm still not sure if this would result in any issues with the wheels rubbing.

My current wheels are 18", 8" with ET50 at the front and 11" with ET45 at the rear

The GT3 RS wheels are 19"'s, but are also a bit wider, 8.5" with ET53 on the front and 12" with ET51 at the rear

The calculator indicates the fronts will have 9 mm less space on the inner, will this rub on full lock? Similarly they are 19mm wider on the inner edge at the back, will this cause any problems. I've seen GT3 wheels on a 996TT before, but not sure whether they were RS or not

I'll have another search, but if anyone has put on similar size wheels their findings would be greatly appreciated

Yes, there is a set that I can do a deal on, but to your point there are 18"'s available so maybe I should bide my time and wait until a set becomes available with the correct offset etc. I only picked the car up today, I'll be posting pictures later and it is well set up so another reason to leave alone I guess.

Thanks for the links, I thought I was quite good at finding things on ebay, but I'd not spotted any of them before!