It all depends what you like...
I fitted 255/50 onto 18 x 8" wide wheels with ET 43....
Here they are on my van, before it got lowered...
They give a good comfortable ride and make the speedo read spot on.
Tyres are Bridgestone T005 and are 106 load rated, there are also some Hankooks with the same spec. you'll find both on Black circles.
My wheels are ATS Evolutions, but I'd check out Wolfrace who have some reasonable priced load rated wheels and can supply complete with tyres.
For what its worth I got my from Wheelbase Alloys, but it took them 6 months to actually deliver all 5 wheels that were ok.
Also if like me you believe the spare wheel should be a real full sized one then the carrier will need modification to fit it.
let us know what you go for.