What body shell are we talking here?
Is this for your GB?
If it is the GB, with wheels the sizing you have mentioned, you are going to have to solve the front wheels hitting both the front apron and the firewall when you are turning.
And on the rear you are going to need some pretty serious flares.
Here's a pic of one of my wagons with 16x8 + 10s on it. Wagons share the same rear guards openings as a GA/B.
![Image](http://sphotos-f.ak.fbcdn.net/hphotos-ak-prn2/603135_3414656125186_1543486458_n.jpg)
From my calculations:
With the rear rim sizing you'll be looking at the outside edge of the rim being 30mm further outside the guard.
With the front rim sizing you'll be looking at the outside edge of the rim being approx 16mm further in then what I have in this pic. Saying that though, the GC/D front guards are larger in the wheel arch, and this wagon has GH struts/ brakes which narrows the front wheel track by approx 20mm, so obviously with stock Galant struts/ brakes add another 10mm on that width shown there.
What motor are you planning to run? Will you need to upgrade the front struts/ brakes or keeping the stock Galant ones?
BTW, those 16x8 +10s rub on the firewall and the front wheel arch on full lock in both directions.
Dave...