jla wrote:
Went to wider 28mm tires
to improve comfort and puncture resistance
-What is optimal PSI?
-Will any tubes work or are the 18-23mm tubes now too narrow?
Thx!!
Ironically, it's not the size tyre but the pressure that dictates comfort. The reason you need a bigger tyre is because reducing pressure the same amount on a small tyre would make you vulnerable to pinch punctures.
Now a few bits of missing information required to give a useful answer.
- Clinchers?
- What specific tyre and what dimensions are the rims? 28mm is a nominal size, the actual size will depend on the specific tyre and the internal width of the rim.
- What do you weigh? Heavier requires more pressure
- What sort of bike? Tri bike puts you further forward than road bike so tyres would probably be more even in terms of pressure