Quick question ... Will an 18" 10j et25 fit the rear without arch work ?

No

Simples!

My 18 10j did and with 275 35 18s on

My 18 10j did and with 275 35 18s on

 

Yes, but a 25 offset means it won't...

Bugger :) ... Will fit tyres tomorrow with a little stretch and see how we get on , but sounds like the arch roller will be needed

Going by what I've just read elsewhere on here they should fit with a 245 or 235 ....

Mine are 18x10, can't remember if they are et25 or et22 but the arches needed fettling. That's with 255s on

Going by what I've just read elsewhere on here they should fit with a 245 or 235 ....

 

Waaayyyy too narrow for a 10".

I stand corrected.of course.

As Si says too narrow unless you are going for that stretched look. 10j wheels need 265+ (ideally ++)!

Good luck with your quest!

Yea 245/35/18 looks pretty much what I'm after , cheers folks