more help wanted on tyre sizes

only difference is width-height is same and most people i know only go as big as 285/75/16 for touring etc and would assume 305's pretty hard to get off the beaten track. give a couple of tyre places a call where you head out for trips to see what they stock. check out a few tyre places and see what they can supply locally.
from what i gather 305/70/16 on 8 inch rims is pushing the limits of tyre size for that size rim

All my mates including myself have 285/75-16 and I find this is good because if we need to grab a spare off each other we can. I haven't done the calcs but a 305/70 is not going to give you that much more clearance. Plus another consideration may be if you need a lift for these tyres not to scrub. I wouldn't imagine that they would be that easy to get once away from the metro area. Just my $0.02 worth
Leroy

Not much to say re your main query on specs and choices but re the supply out of town....keep in mind that when you get right outback, the tyres on offer are very limited - the stock carried by repairers in far away places can be very simplistic - its often budget brands in limited popular sizes, just to get people out of trouble.
When in William Creek SA recently, between the two suppliers they only had Kumho 31x10.5-R16 @ $210, or second hand, really worn stuff - nothing else. Because mixed tyres on certain diffs are not good, second spares of the right sort are the go for a lot of trips. Re that really wide BFG rubber you speak of.... presume they cost bigtime and most bush 'experts' suggest the wider tyres have reduced reliability.....I'm on 245/70-16 BFG's (stock size for the Jack) and will stay with them....been a winner for me.

a 305/70/16 is damn close to a 285/75/16 in size.

whilst it is less common in the outback, you will be carrying some form of puncture repair and a pair of spares, so you should be fine... ;)

A fresh new tyre is only a couple of days away via freight... Australia isn't all that remote....

steve

A 285/75/16 is "equivalent" to a 33" x 11" tyre. The 305/70/16 is "equivalent" to a 33" x 12" tyre. As both rolling diameters are as near equal, all you gain from the 305 is extra width. Do you need or want the extra width?

IMHO 285's are more than wide enough and are a relatively common size (well, more so than a 305).

Cheers

Captain

ive sold 0329578945019750975975 tyres well nearly
i think ive sold maybe 8 305s

Thanks again guy's, now do you think 285's will work OK on 7" alloys that are standard on the RV

Cheers
Jeff