Thread: what is the better option 33's or 35's

Originally Posted by LowRanger

Another point to remember is that a 285/75 tyre is only a 10" wide tyre.And people have been running 31x10.5r15's on 7"rims on Japanese 4wds successfully since the late 70's

Wayne

285/75-16 are 11 to 11.5" width, not 10".

The 255/85-16 is roughly 10" and run on 7" rims as recommended by the manufacturer, but that tyre is over 1" narrower.

Originally Posted by Slunnie

285/75-16 are 11 to 11.5" width, not 10".

The 255/85-16 is roughly 10" and run on 7" rims as recommended by the manufacturer, but that tyre is over 1" narrower.

From what I have seen, most manufacturers have 7.5" as minimum rim width for 285s.

I have been running 285s on 7" rims for years with no issues. I even had one tyre fitter tell me that was a good rim size for them in his opinion.

Originally Posted by PAT303

Keep out of peoples paddocks then Rick. Pat

Well, that's happened too, only it was pigs at various times

SWMBO is still traumatised when I wiped out two sows and six suckers one night in one hit.
We were coming home late and dropped into the cattle yards to check a sick calf way back during the drought. I didn't miss my opportunity....
Probably didn't help it was in her car either

Originally Posted by Psimpson7

I've managed to avoid them all so far thankfully!!

Both the 'fender and Patrol have had more hits than Elvis, including dents in doors when skippy decides to hop into you even though you are only going 40km/h.

When we bought the Patrol she was so chuffed that she wheeled and dealed and got the Ti ally bar instead of ST ute steel one.
She couldn't understand my dismay until the first roo hit.
Haven't killed it yet, but I've had to pull it out at least half a dozen times so far, yet the Defender bar is unmarked.

Originally Posted by Slunnie

285/75-16 are 11 to 11.5" width, not 10".

The 255/85-16 is roughly 10" and run on 7" rims as recommended by the manufacturer, but that tyre is over 1" narrower.

Yep, big difference in section width between a 285 and 255.
The 255/85 is s great choice if you only have 6.5" rims, it's the minimum legal size.

Originally Posted by isuzurover

From what I have seen, most manufacturers have 7.5" as minimum rim width for 285s.

I have been running 285s on 7" rims for years with no issues. I even had one tyre fitter tell me that was a good rim size for them in his opinion.

I can understand this, particularly airing down off road and not wanting to pop a bead.

We had big problems just getting 265/75's out onto the 8" Patrol rim.
Had them sitting overnight with tubes inside to get the bead out, none of the bead seaters would work, they were a proper pain in the arse.

you'll kill less cv's with the 33"s

Originally Posted by Slunnie

285/75-16 are 11 to 11.5" width, not 10".

The 255/85-16 is roughly 10" and run on 7" rims as recommended by the manufacturer, but that tyre is over 1" narrower.

Ok teach me to try and write something at 930pm after being up since 3am

most 285 tyres that I have found,have a sectional width of 279mm or 11" which is still only 1/2" wider than a 10.5" tyre that has been commonly used for many years on Japanese 4wds.

If I was making a tourer I would consider 8" rims.But in an Offroad situation I would use 7" rims every time.
I only use 8" rims with my 35's and they are close to 13" wide.
There are many threads on Pirate 4x4 about rim widths and their pros and cons.
The disclaimer I have been making all along is that this IS NOT what the manufacturers recommendations are,BUT what works best in the real world,especially if you need to run lower tyre pressures
I also apologise for taking the original post away from the original question
Wayne

If you are not going to use the vehicle for A grade type trips,then I would just run 33" tyres.
Having 2 sets of rims,and doing A grade type trips,I would recommend 35" tyres,with all the other modifications that come with them,ie uprated diffs,cvs and axles and suspension,as 35's are a lot heavier.

Wayne

Originally Posted by flagg

35 needs gearing mods,

I mostly agree apart from the above. This isn't the case. It may be preffered or advisable, but I run std Defender transfer ratios, and std 3.54 diff ratios, and only once in the last 6 years have I absoloutely wished I had lower gearing available and that was on an immensley stupid track.