Quote Originally Posted by jonkka View Post
Unless supplementary regs amend this (need to check), FIA regulations state the following:

13.11 SPARE WHEELS
Cars may carry a maximum of two spare wheels. If stipulated in the Appendix J for the concerned group, cars must carry at least one spare wheel.
and the Appendix J says:

802 SPARE WHEEL
Spare wheel(s) is (are) not compulsory.They must be securely fixed in the cockpit (the centreof the spare wheel must be behind the driver seat and the codriver seat) or in the lugguage compartment.