ronnie_rotten Posted August 29, 2009 Share Posted August 29, 2009 My girlfriend has a 1985 mercedes 407d van which she has an unhealthy obsession with. Good girl, says i! Thing is, it running on 10 ply 6.50x16' which are a pig to source new, let alond second hand. So, my question is, if the van's gross weight is 3500kg, has twin rear wheels, and is currently on 10 ply radials, would i get into horrible trouble if i put a set of lower ply landrover 7.50's on? My hi cap has 8 ply remold mud tyres and has been known to carry quite a lot of weight at times with no bad results. What would be a safe alternative to the rockinghorse shoes she's got at the moment? Quote Link to comment Share on other sites More sharing options...
landmannnn Posted August 29, 2009 Share Posted August 29, 2009 I think the key to this is the load and speed rating rather than ply. The load speed rating would be something like 110T which would be stamped on the tyre 110=1100kg per tyre and T=118 mph, explained in this table: link As long as the tyres have sufficient load speed rating you shouldn't have a problem. The 7.50's will of course be bigger than 6.50's so you would need to buy 6 of them Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted August 29, 2009 Share Posted August 29, 2009 Surely you can source some more common sized tyres to fit onto a 16" rim? Quote Link to comment Share on other sites More sharing options...
ronnie_rotten Posted August 30, 2009 Author Share Posted August 30, 2009 A more common size? exactly my thinking. To my mind 750's are a pretty common size and narrow enough to fit on the merc rims. Since at least 4 of the tyres we've got have seen better days, buying 7 (gotta have a spare!) isn't that big a jump. Excellent table by the way, should ease my girlfriends mind a bit. New boots here we come! Quote Link to comment Share on other sites More sharing options...
LR90 Posted August 30, 2009 Share Posted August 30, 2009 Just a thought but with the twin rear wheels and the gap between them is there room for wider tyres? Quote Link to comment Share on other sites More sharing options...
callum Posted August 30, 2009 Share Posted August 30, 2009 vass have 1 or 2 6.50's for sale http://www.vass.co.uk/treads.asp Quote Link to comment Share on other sites More sharing options...
bluespanner Posted August 30, 2009 Share Posted August 30, 2009 I'd go for 175/75R16 or 195/75R16 depending on rim width. Both are common sizes for LCV. Quote Link to comment Share on other sites More sharing options...
Yostumpy Posted August 30, 2009 Share Posted August 30, 2009 years ago I used to have a LWB merc 608D high top camper, that had horrible 6.50's on all turkish. Swapped them over for 7.50 sat type tread as I was going to Austria for a month at X-mas camping. Made a bit of a noise, but it did look bl@@dy good, looked like a UNIMOG. Everywhere we went people would look, then look underneath! To see if it was 4x4 I suppose. Never thought about the rating tho'. Quote Link to comment Share on other sites More sharing options...
nicks90 Posted September 1, 2009 Share Posted September 1, 2009 you could always pick up a set of 205/16 that were original fitment on discos. not far off the original size of the 6.50 and plenty of nice branded ones to be had very cheap off ebay. Quote Link to comment Share on other sites More sharing options...
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