a stretched tire makes the sidewall flex less giving you more constant grip till break away... it does also make break away more sudden... you will get more grip out of a stretched tire than the same tire on a narrower rim...
in this case you probably find that 235 and 245 have almost the same grip levels with the 235 giving you more grip on the edge while the 245 will give you a slightly better ride and a more progressive break away...
in this case you probably find that 235 and 245 have almost the same grip levels with the 235 giving you more grip on the edge while the 245 will give you a slightly better ride and a more progressive break away...
