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Thread: Advice needed: Best Caterham model for road and occasional track days.

  1. #21
    Join Date
    Sep 2019
    Location
    Austria Salzburg
    Posts
    2

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    thks Mike, are the 13inch wheels in the shape of the original 15 inch wheels still available? I do not find them on the Caterham webshop thks again Hanns Per

  2. #22
    Join Date
    Feb 2009
    Location
    NYC
    Posts
    4,468

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    Caterham never sold the 13 inch wheel for the CSR. The standard 13 inch wheel for S3 or SV will bolt on the front of a CSR without a problem. The rears are the issue since they have a different offset to the S3 or SV. Also the rear brake calipers prevent clearance with a 13 inch wheel

    So you need a non-Caterham 13 inch wheel - I use the Westermann BBS wheel as it has a larger inner barrel and I like the styling but you could use other brands just as easily once you have the offset correct. You still need to modify the rear calipers to provide inside wheel clearance. This involves modifying to use new tighter caliper banjo fittings and grinding the cooling fins off the calipers. Westermann sell a kit but you could do your own method.

    Race CSRs do not have the same issue as they use a different upright and rear brake set up to the road CSRs. They also have no handbrake.

    The shift to 13 inch wheels is an intricate process to do but it does transform the car from less rotational mass of the wheels plus I find the handling improved with more predictable break away. Pity you are not closer - you could check out my car to understand the changes better.
    Mike
    2010 Caterham CSR with Cosworth 2.3 Duratec
    2018 Caterham 420R with 2L Duratec 210hp at Donington UK
    1975 BMW CSL Group 4 (restoration - engine and dry sump install time)
    1977 Holden Torana "A9X" (awaiting restoration)
    1985 Holden Commodore Group A (restoration - engine rebuild)
    1982 Ferrari 400i (will repaint to original color in 2020)
    1965 Ford Mustang Fastback "Holman Moody"
    1992 Ford Escort RS Cosworth WRC (fettling after long period of storage)
    1990 Range Rover 2 door Classic

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