Mark Durrant Posted November 24, 2006 Share Posted November 24, 2006 The purpose of the changes to the regs is to make sprinting attractive to more members of the club irrespective of what model car they own and to minimise costs. It has been suggested on a couple of the threads about limiting wheel and tyre sizes and I for one intend to use 6.5 with 185 on the fronts and 8.5 with 205 on the rears as I do not want my car endig up looking like the Ford Anglia in 'Carlos Fandango' trim (I think this was from the Hamlet advert ) What are your views on a limiting the wheel and tyre sizes as follows: Front Maximum wheel width 7" Maximum tyre width 195 Rear Maximum wheel width 8.5" Maximum tyre width 205 These restrictions would apply to classes 1-5 only. Please can we keep the contributions constructive Mark D Comp Sec Link to comment Share on other sites More sharing options...
neil.cavanagh Posted November 24, 2006 Share Posted November 24, 2006 Mark, I think you'd have to allow 205 fronts as well The standard 16" wheels that I ran on for most of last year, and are factory option on quite a lot of cars are 205 all round.... I guess the idea is to prevent people having, or feeling they have, to go out and spend a load on new fatboy wheels. Is there anyone who already has wider wheels who would have the cost of replacing them added to the cost of replacing ACBS? Link to comment Share on other sites More sharing options...
Jason Plato Posted November 24, 2006 Share Posted November 24, 2006 *thumbup* *thumbup* but I would simply state "max 205 and other sizes are at Sec's discretion" this will encompass the michelin pile ups @ 195 mm and Stunners and the discretion bit will allow you to approve CSR's on their factory fit Cr500's in 235 rears ( which are rock hard anyway ) here is C7 TOP South Wales AO Edited by - Dave Jackson on 24 Nov 2006 09:10:55 Link to comment Share on other sites More sharing options...
Gambo Posted November 24, 2006 Share Posted November 24, 2006 *thumbup* Yes great idea. RED 2.0 HPC 230BHP Link to comment Share on other sites More sharing options...
Jeff S Posted November 24, 2006 Share Posted November 24, 2006 Definitely a good idea mark, But if Kuhmo's are to be the tyre of choice for list 1b's then according to Simons thread they come in 215 width not 205. Still think the idea would work in levelling the playing field a bit more and encouraging new sprinters. (Offered a mate a dual drive next year and hes very keen to join us. potential caterham owner and sprinter ) Jeff Link to comment Share on other sites More sharing options...
david nelson Posted November 24, 2006 Share Posted November 24, 2006 Can anyone explain why there is a need to restrict wheel or tyre size.As I am unclear of the reason at this time. Thanks David Link to comment Share on other sites More sharing options...
Mark Durrant Posted November 24, 2006 Author Share Posted November 24, 2006 David The reason behind this is I do not want propspective sprinters being put off by the thought that they need to change there wheels, let alone tyres. Mark D Comp Sec Link to comment Share on other sites More sharing options...
Jeff S Posted November 24, 2006 Share Posted November 24, 2006 *arrowup* Oops, after reading other threads I now get it! 205 max... Jeff Link to comment Share on other sites More sharing options...
CageyH Posted November 24, 2006 Share Posted November 24, 2006 Sounds good. Max width 205 unless factory fitted original spec tyres or at sec's discretion to allow CSR's etc. to play Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
david nelson Posted November 24, 2006 Share Posted November 24, 2006 If you restrict tyres to 205 is this not a restriction on the higher powered class 5 cars. They will find it difficult to get the power down. It was proven by DJ that wide tyres can be an advantage. CC current cars are roadsport sigma engine 14" rims superlight/R300 15" rims CRS 15" rims So no 13" rims as standard so I can not see the point so a from me. David Link to comment Share on other sites More sharing options...
david nelson Posted November 24, 2006 Share Posted November 24, 2006 Also Kumho come in 175/60HR13 215/50VR13 235/45VR13 so that rules these tyres out but include 185/55VR15 205/50ZR15 Last year i run 7 22 13 = 215 DJ run 8 22 13 = 245 David Edited by - David Nelson on 24 Nov 2006 14:42:27 Edited by - David Nelson on 24 Nov 2006 14:46:16 Link to comment Share on other sites More sharing options...
Jason Plato Posted November 24, 2006 Share Posted November 24, 2006 Dave N I think you have the wrong idea the restriction would be on tyre width not rim diameter. 205 wouldnt give any issues to deploying 240 bhp, class 4 cars were domig this previously on wood tyres. 205 width would keep things sensible and yes they would preclude he use of Kumho or any other tyre wider than 205 mm so we would all be in the same situation. It would certainly cap any silly things developing and keep a perpective on road use . non crossply max 205 tyre width *thumbup* Dave here is C7 TOP South Wales AO Link to comment Share on other sites More sharing options...
CageyH Posted November 24, 2006 Share Posted November 24, 2006 I guess we need those A24 compound CR500's now then Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
david nelson Posted November 24, 2006 Share Posted November 24, 2006 OK I FEEL for it, and its not even april 1st. what next class 6 a for all that who would like wide tyres and cross plys. David Link to comment Share on other sites More sharing options...
Grahame W Posted November 24, 2006 Share Posted November 24, 2006 So that means for those with 13" wheels ( whilst not a current new Caterham spec, there are still a lot of cars out there with them ) its 175/60 Kumho's all round or less grippy but 205 section R888's ? Or a new set of rims ? Link to comment Share on other sites More sharing options...
Jason Plato Posted November 24, 2006 Share Posted November 24, 2006 Personally my choice would be R888's in 205 rears and 175 fronts in kumho or 888 unless 48's come out in the spring in supersoft compound . Or Dunlop formula R's , which I think are radial A new set of 15 inch rims wont change the fact that you can still only fit a maximum 205 section tyre so there is no point in buying new rims or am I missing something . 205's can be fitted on the 6" wide rims perfectly well or on the 8.5 " wide rims. just stating max 205 width would be a lot simpler here is C7 TOP South Wales AO Edited by - Dave Jackson on 24 Nov 2006 16:13:50 Link to comment Share on other sites More sharing options...
david nelson Posted November 24, 2006 Share Posted November 24, 2006 but most new cars have 15" rims Link to comment Share on other sites More sharing options...
CageyH Posted November 24, 2006 Share Posted November 24, 2006 Or Yoko A048's, CR500's, or the Dunlop track day tyres... Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
CageyH Posted November 24, 2006 Share Posted November 24, 2006 Plenty of 205's available in 15" Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
Jason Plato Posted November 24, 2006 Share Posted November 24, 2006 Dave Nelson - I cant see what your point is 15" rims have plenty of 195 & 205 section options ? maximum 205mm wide tread doesnt relate to wheel diameter here is C7 TOP South Wales AO Edited by - Dave Jackson on 24 Nov 2006 16:20:20 Link to comment Share on other sites More sharing options...
david nelson Posted November 24, 2006 Share Posted November 24, 2006 Mark said The reason behind this is I do not want propspective sprinters being put off by the thought that they need to change there wheels, let alone tyres If we keep to 15" rims then no one with a new 7 will be disadvantaged by not having 13". It will getmore new comers in as they willl not have to change the wheels. as for 205 whats so magic about 205 over 215 i must be missing something??? David Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted November 24, 2006 Share Posted November 24, 2006 I'm not sure. I can see positives for both. Limiting the size certainly levels the playing field. It will probably end up as a two tyre champs. However it may be to prescriptive. Personally if the Kumho's do turn out to be soft. I would have run 175 front and 215 rear just as Mark said not to look to silly. Perhaps we should not exclude any one manufacturer in limiting the width. So uping the limit to 215 allows "sensible" widths in all manufacturers. 205 to 215 won't make much difference on the 8.5" rears anyway. I see limiting the size to 205 as excluding Kumho which at £75 is a "cheap" tyre option for me. Of course it may not be the tyre of choice anyway. Christ you can go round in circles writting your post yourself Link to comment Share on other sites More sharing options...
4ster Posted November 24, 2006 Share Posted November 24, 2006 So, Class 3 have to ditch their ACB 10s & are looking for the best radial for 2007. Kumho seems (at the moment) to be the obvious choice but only available in 205 section for 15 inch wheels. So if 205 limit reccomendation is accepted, Class 3 folk have to take a loss on their ACBs and fork out for new 15" wheels if they want to be front runners. Surely I must have misunderstood! Even if another tyre ends up being favourite, it can't make sense to exclude this option for 13" wheelers at this very early stage. I wait to be suitably corrected. Link to comment Share on other sites More sharing options...
red dave Posted November 24, 2006 Share Posted November 24, 2006 It's like fashions. I knew if I hung on to that spare set of 32's in ss they would be good for something. catch me if you can ❗ Dave Link to comment Share on other sites More sharing options...
martin b Posted November 24, 2006 Share Posted November 24, 2006 Mark Just 2 thoughts As said earlier perhaps 215 is a reasonable cut off point Perhaps the class 5 runners should be asked if they will need to purchase new wheels as well as tyres, would that be too big an ask as well as no ACB10s, if their front and possibly rear rims will be too wide, I remember reading Dave Jackson had 8" fronts but Dave seems happy with the change, not sure about others. Martin Link to comment Share on other sites More sharing options...
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