The rule of 105 is based on the aerodynamic efficiency of tire size. The rule of 105 does not take into account the speed gains from a wider tire at lower tire pressures. To explain further, the aerodynamic cost of a wider tire (say 25c to 28c) is lower than the savings you see in rolling resistance, so if you want to be faster, ride a 28c tire.
Articles in this section
- What is the warranty coverage for Zipp wheels?
- What is the minimum tire pressure for the Zipp 808 Firecrest or 858 NSW wheel?
- What is the recommended tire pressure to use for the Zipp 858 NSW or 808 Firecrest disc brake Tubeless wheel for my riding weight in PSI?
- What about tire size and the rule of 105?
- The new Zipp 858 NSW and 808 Firecrest disc brake wheels have a tubeless profile with hookless, straight sides. Do you have a list of tires that are compatible?
- Is the Zipp 808 Firecrest or 858 NSW offered in 650b?
- Do the Zipp 808 Firecrest and 858 NSW wheels ship with tubeless rim tape installed?
- What model spokes and nipples are used in the Zipp 808 Tubeless disc brake wheelset?
- What are the overall dimensions of the Zipp 808 Firecrest hookless disc brake rim?
- How many points of engagement does the Zipp ZR1 hub rear hub have?