what fits..hmm. 215/85R16, 235/85/R16, 6.50/16, 700X16, 7.50/16 - hell, I've even got 900X16's that are legal on a 5.5" wide series rim ( made in the USA by TBC, actually, so dont tell me you cant get them) also, Stockton wheel, for example, can take a series Rover center, and fit it to a ford 15", or 16" shell for ~ $80 per wheel, and width you want.
'I' brought up series axles as being relevant to another post, as I'm in the process of building this exact setup with series rover axles. If you work at a dealership, you SHOULD know that with the exception of the tube widths, the series axles, and Disco axles are cross compatible...to the degree that bearings, and even the seal for the steering ball fits my series 1 axles. Dealers being dealers, I dont imagine your manuals, or parts supply cover that though. West Coast British, and Rovers North are 2 BIG independent shops in the US, and have prices comparable to Canada on parts ( there's a lot of cross border trade in used rover parts, just not through dealerships)
Also, you might consider trying to read the posts in threaded mode....the series axle post was made BEFORE your reference to 'series 1/series 2' axles.' which is VERY confusing if the reader doesnt know there are series rovers, adn that MK1, MK2 Discos are also often referred to that way.. Call up a dealership, and ask for a third member parts for a series 1, and I gurantee they wont think you're talking about a discovery. I find it funny how LR factory service manuals refere to them as MK1, and MK2 discos,and specifically DONT call them 'series 1/series 2disco's to avaoid the sort of confusion going on here - what dealership is it you work at, and what exactly do you do there?
here's mine, BTW
got a pic of yours?