What would be the tallest tyre I could get under a stock D40 without any issues?
Currently has 16 inch which I may keep but like the look of black sunraya so a rim change may be on the cards.
I'd say 265X75X16. Prolly best to stick to the stock Alloy wheels 16's to for that matter. Save some coin to. Nicer ride and less unsprung weight over steelies. Looks is not everything.
I have Goodride AT SL369's 215/85 on my standard 6" x 16 rims. I did the Canning Stock Route last year with no problems. I do have the suspension lifted about 45mm.