they are 18's.
old ones were 18's in stock tyre size.
the one's i've just put on are 285/60 R18 Cooper Zeon
the old ones were highway tyres
new ones were on the discovery 2 and had no issues in the bush.
i'll let you know next week how they went. i've literally only put them on an hour ago. still need to make a small incision in the mud guards
contribute what, to where?

