Tyre sizes

[elowarr]

Ok a while back I asked about putting different wheels on my scoob. At the moment it has the standard 16" wheels and tyres, what would be the tyre sizes required if I were to go up to 17" or 18" bearing in mind that I wish to keep the rolling diameter of the standard wheel.


Cheers.

[scoobyDAZZA]

205/45/17
215/40/17

215/35/18

[elowarr]

Thanks for the info, there is one more question though, What width rim would I need with the 17"/18" wheels?

[scoobyDAZZA]

17x7
or
7.5x18

with 50mm ish off-set

[jinxy]

i have 17 x 8 on mine with a 36 offset.

[scoobyDAZZA]

and ?



i'd imagine most people would want to do it the right way !!!!!

[jinxy]

and what? I dont quite understand what your saying.

[bob]

One important point to bear in mind when shopping for new wheels is that the recommended offset (the distance between centre of the rim and the mounting face) for Impreza wheels is unusually high, at between 52 and 55mm depending on the model. Using more common, smaller, offsets will increase the track (width) of the car, which may cause the tyres to foul the arches, and will have an adverse effect on handling (by increasing the leverage of uneven roads and cornering forces on the suspension and steering components). One knowledgeable wheel retailer claims that anywhere from 45-55mm is fine (even going so far as to say that 55mm is excessive!), whilst a Subaru dealer insists that 55mm is essential and anything else wrecks the handling. It's probably worth pointing out that the standard wheels are 52.5mm offset, and the Speedline Competition 2, sold by Prodrive through your Subaru dealership, is 48mm!

[scoobyDAZZA]

couldn't have said it better myself

cheers bob ;)