tbird Posted January 12, 2011 Share Posted January 12, 2011 Suspect it won't fit under front wings, using this calculator If I have done the maths correctly (not a given ) the overall diameter of a 195/50/15 will be about 20mm more than the 195-45 15 Tim CSR 200 Aztec and Black Edited by - tbird on 12 Jan 2011 11:17:37 Link to comment Share on other sites More sharing options...
Billyboy Posted January 12, 2011 Share Posted January 12, 2011 I had been looking more for what tyre would replace the rear on a front rim as an emergency wheel / tyre combo - did not think to see just how much of a difference the 50 ratio would be compared to the standard Buy yes 20mm - My CSR has about that as clearance under the front arch - What a conundrum this is for CSR owners who want to tour. Make it clear the front arch and this is an option - The front wheel BTW is not standard - there is a portion machined off the rear hub area from the standard 15 inch wheel - so it needs to be a front you use from a CSR not a standard one... The rear tyres are unique and the front wheels are unique - afaict Link to comment Share on other sites More sharing options...
tbird Posted January 12, 2011 Share Posted January 12, 2011 the 20mm will effectively be split top and bottom so 10mm higher at wing, thats still getting on for 1/2inch (for us old fogies 😬) not sure I have that between trailing edge of wing and tyre, maybe worth a test if you have a friendly tyre fitter with a tyre in stock, I cannot measure as car not with me at the moment. Tim CSR 200 Aztec and Black Edited by - tbird on 12 Jan 2011 17:51:08 Link to comment Share on other sites More sharing options...
tbird Posted January 12, 2011 Share Posted January 12, 2011 BTW to answer you original question about availability MOG racing have them here, not exactly France or Belgium but at least not water in the way, Probably worth giving Jaochim a quick call to check stock if you want complete piece of mind but I think he carries stock normaly Tim CSR 200 Aztec and Black Link to comment Share on other sites More sharing options...
paul jacobs Posted January 12, 2011 Share Posted January 12, 2011 Well, I have tried and I couldn't get them to fit under the front wing, no matter how hard I pushed. 😔 The front wheel will however fit on the rear with a suitable pair of spacers. Paul J. Link to comment Share on other sites More sharing options...
jimh Posted January 12, 2011 Author Share Posted January 12, 2011 Silly ideas time but ..... would it be an option to remove the mudguard temporarily just to get moving? Link to comment Share on other sites More sharing options...
RD Posted January 12, 2011 Share Posted January 12, 2011 Options : Take risk Carry can(s) of tyre weld Carry tyre weld, & compressor/pump Carry tyre weld, compressor & puncture kit Have good Recovery breakdown cover Keep spare tyres (front & rear) at home for shipment/transport to you, arrange fitment (days tick by) Have CSR adapted to carry spare. Put rear tyre on carrier as it is possible to get the 195mm tyre width through ‘local’ agents whereas the 245mm is as rare as rocking horse carp Sell car Rob Link to comment Share on other sites More sharing options...
tbird Posted January 12, 2011 Share Posted January 12, 2011 Sell Car *nono* *nono* *nono* *nono* *nono* *nono* *nono* *nono* 😬 Tim CSR 200 Aztec and Black Link to comment Share on other sites More sharing options...
weeman Posted January 16, 2011 Share Posted January 16, 2011 Hi Paul As Jo said before, we carry a spare front wheel which fits both front and rear. I see many references to the requirement of spacers to be able to fit the front wheels on the rear. What are these spacers for? Our front fits the rear easily and doesn't foul anything. Am I missing something? I'm seriously considering buying another pair of front wheels for the rear of the car, to be used whilst travelling abroad. A simple adjustment of the rear dampers to give the correct rake is all that's required. I know that many will baulk at the idea of running 260 BHP on 7'' tyres but there are plenty of Sevens out there doing exactly that. I like the idea of a puncture repair kit. I think I'll get one of those, this, as well as a spare wheel and two cans of tyreweld, but that's me all over, Belt/Braces... and another Belt 😬 _________________________ Be Lucky!! Martin (Solent Se7ens) Link to comment Share on other sites More sharing options...
paul jacobs Posted January 16, 2011 Share Posted January 16, 2011 Hi Martin , Jo 😬, with regard to the wheel spacers, the front wheel hubs on a CSR have been machined to allow a greater inset than is normal, so when used on the rear, they will sit in too far, which may not matter for a short and slow distance. If spacers are used to push them further outwards on the rear, the studs will need to be changed for longer ones though. Maybe your fronts haven't been machined though as the car was built from scratch with the rear carrier, you'll have to compare them with another CSR when you have the opportunity. If you wear two sets of belt and braces, you can be sure your trousers will never fall down Paul J. Link to comment Share on other sites More sharing options...
tbird Posted January 16, 2011 Share Posted January 16, 2011 Martin Hi, have you ever had to use a front tyre on the rear, the perceived wisdom would be a difference in circumference of 3.6 % across the axles could damage the Diff. I guess if you have done some decent distances then the Diff can take it. Tim CSR 200 Aztec and Black Link to comment Share on other sites More sharing options...
weeman Posted January 16, 2011 Share Posted January 16, 2011 Paul You say that the front wheels on the rear will 'sit in too far'. What affect does this have? As I said my front wheels don't foul anything at all when fitted on the rear. I'm not being argumentative; I simply want to learn as much as possible. Tim No I've not had to use the front as a spare on the rear (yet). I have tried it out, but literally just round the block, so to speak. My theory about using a front wheel as a spare is just that... a theory. Hopefully I'll never have to put it to the test, but I would like to know that I can, if the need arises. _________________________ Be Lucky!! Martin (Solent Se7ens) Link to comment Share on other sites More sharing options...
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