MKarnowka,
Welcome to this forum!
The three 16" tyre sizes used on CMPs were 9.25-16, 9.00-16 and 10.50-16, the first being the smallest, the last being the largest of the three. The 9.25-16 tyre was used on the Lynx and C8A HUP, the 9.00-16 tyre on 15-cwt trucks and the 10.50-16 tyre on C15TA and 30-cwt trucks. In 1:35 scale the difference is hardly noticable, but if you want to do it correct, you must make sure to use the correct size tyre on your kits.
See
CMP Specifications for all tyre sizes.
Hope this helps,
Hanno