Kang Posted July 27, 2023 Share Posted July 27, 2023 Hi everyone. I’m turning a 1983 cg125 into a cafe racer and I’m after some advice regarding tyre pressures. I’ve fitted retro style 4.00” tyres that are much bigger than the standard ones that were on there when I bought it. Standard air pressure should be 25psi on the front and 28psi on the back. Should I stick with that pressure or have more or less in there with the bigger tyres. Thanks. Quote Link to comment Share on other sites More sharing options...
hawkeye Posted August 4, 2023 Share Posted August 4, 2023 If you fit a bigger tyre you will need to run a slightly reduced pressure, don't make big changes, try 5psi less for a start. I had a Harley about ten years ago and customised it, i changed the front and rear wheels and tyres but kept the same pressure for the std tyres. The ride was bloody awful, hard, bike bounced about and just a horrible ride. I had to drop 10psi on my bike to get a ride i was used to. Don't forget as you ride the tyres will heat up, in doing so the pressure rises. 1 Quote Link to comment Share on other sites More sharing options...
Kang Posted August 8, 2023 Author Share Posted August 8, 2023 Thanks Hawkeye. I thought that would be the case. I don’t have much experience of riding motorbikes but I’ll have a play around and see what feels right. Cheers. Quote Link to comment Share on other sites More sharing options...
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