FloridaRider Posted August 14, 2019 Share Posted August 14, 2019 I recently acquired a 1976 RS 100C with less than 5K miles. It doesn't need much attention, but I want to replace the tires. The bike came with a 2.5-18/front and 2.75-18/rear. The Owner's Manual says these were the proper tires, but my Haynes Workshop Manual says 2.75-18/front and 3.00-18/rear. Can anyone tell me which is correct and/or recommended. I'd like to stay as close to "original" as possible. Thanks, Bob Link to comment Share on other sites More sharing options...
pilninggas Posted August 15, 2019 Share Posted August 15, 2019 not sure of this helps: https://bikez.com/motorcycles/yamaha_rs_100_1975.php looks like haynes is wrong. Link to comment Share on other sites More sharing options...
FloridaRider Posted August 15, 2019 Author Share Posted August 15, 2019 Thank you. I was thinking the tires on the bike when I got it were the originals (very bad shape), so I'm going with 2.5-18 and 2.75-18 Bob 1 Link to comment Share on other sites More sharing options...
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