ok so i used the website and its say the rev per miles on the 295/30/22 are 718
and the 285/35/22 are 697 so there is a difference.

the rolling radius for the 295 is 14.48 inch
and the radius for the 285 is 14.92 inch

so for future use if i go for different tyre brands, whats the variance you can have?