hi ! dave.
sorry to answer so slow , been off the net have been doing the camper for our long drive through europe in june
at the moment your camper is like a boat on the road with these 14, wheels on and is a pig on the roads on corners lean dont they when you put these 16" wheels on it will be a hugger on the road like glue and you can feel absolute confidence with her now you will be shocked i mean this no slow corners any more i am not a hooligan on the road neither too old for that sort of thing lol!
sorry again dave ! the answer to the springs are you the kind if guy that has get up and do your self !. it is about 2 hour,s work over the pit , or 4 hours, under axle stands good one,s but safe . i will answer 1 question for you now you can get super singles for your camper and they are allumimium all round how exp! do not know you can look around in here cannot for the life of me remember the web address gut they are german or norway , all i can remember about it was you order all your accessories awning toilet accessories ect, ect, their might be a connection with omnistor ? ,,
right the springs , germans have always over compensated with every part on the vehicle which is very good where mercedes say max weight is say 1 ton max in fact it will exceed 2 ton , where you might say i need a 6 " wide peace of metal to hold the weight, germans will say no! i want 8 " when 6" is completely acceptable they go over the top . so they last forever . the way you proceed with this is. some one confidant with a 240 a/c 6" grinder a chalk thin chalk that is now the inner wheel will not fit because it will touch the spring and with the outer one on this will touch the outer arch !.
now put the inner wheel on and tighten the wheel so it will be pressed against the spring ! you do not need to go all the way with this i mean as long as it is against the spring that is fine on the inside you are looking at the wheel pressed to the spring now chalk on the spring where the rubber is pressed from the tread side to the bead of the road wheel take the wheel off and you will see a curved chalk line on the spring at the deepest part of the chalk mark you might have 4 mm now start your grinder and grind out until you are down the the chalk in fact grind until the chalk disappears put your road wheel on and the outer wheel on tighten them up and turn the wheel check for clearance as long as you can slip between the wheel and spring some thing like gasket which is about 2mm turn wheel and look for snags or you could chalk the area that has been grinded, wheel on. and turn if the chalk is showing on the tyre wall you need a little more out . but remember this if you put a tyre on like i have which is 215x75 you cannot exceed that width as you have grinded for this size do not go wider stick to tyre size, wheel height is not an issue with this model i must say i have the 16 " wheel and i carry a bit of weight the tyre is up inside the arch safe does more than it is said on the tin if you get my meaning 100% safe to do . i will post some picture,s of mine for you how mine look my weight is unladen 3.6kg max 4.6kg it is the best way around this issue years ago they used 205 tyre high wall tyre,s to get more speed , i did this to my old model the s660 about 4-5 years ago then bought the s700 so i did it again save a lot diesel if you have driven these a long time if you have the old 617 engine 2.9 you can also advance the pump to get better mpg and more power and lower rev"s again .
so said to much again hope it helps , all x/- lol,
ok dave hope this has not frightened you to much , but you have a bad problem running as you are now it is an accident waiting to happen really . your rear bearing are now under weight pressure and your rear shoe brake,s will not expand as they should normally i would put the 4 back on and do this to sort the problem lot,s of people have done this in the past .
but hey ! good luck and have fun it,s easy !
take care , denton.