Tyre Width

Submitted: Friday, Jan 18, 2008 at 15:29
ThreadID: 53615 Views:4445 Replies:6 FollowUps:7
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Have a 96 troopie - 75 series - am changing from split rims to sunrayser 16" rims and will put on AT tyres. Any advice on tyre width - planning to drive GRR and around Alice a bit - Birdsville Track - not sure where else.................on road, too, of course. Am new to all this, so I'll work it out as I go. Thanks in advance for any advice received.
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Reply By: Member - Phil G (SA) - Friday, Jan 18, 2008 at 16:32

Friday, Jan 18, 2008 at 16:32
With 16x7 or 16x8 rims, most use the 265/75R16 tyres because they are very common and come in the heavy duty LT constructions. They are the same diameter as your 750R16.
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Reply By: Member - Adam S (SA) - Friday, Jan 18, 2008 at 17:32

Friday, Jan 18, 2008 at 17:32
G'day loris,
as Phil has said 265/75x16 are the closest to the original rolling diameter as possible and as such the speedo will remain correct.
If you go out side this size you will have to allow for speedo variation.

I have used this size in the Mickey Thompson branded FC -II A/T tyres over the past 30,000 km and have found them to be very good.

When looking at different tyres make sure the load and speed rating meet or exceed the standard specs,it seems like tyre opinions are a personal thing(A bit like Toyota/ Nissan)more important in my opinion are the pressures you run in them.

I have neglected to mention I have 78 Troopie, next set of tyres I am thinking of 285/75x16 but if I do this to stay visually legal I will need to fit flares.
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Follow Up By: Member - loris G (NSW) - Sunday, Jan 20, 2008 at 23:22

Sunday, Jan 20, 2008 at 23:22
Adam - seems to be a bit of a difference of opinion on whether 7" or 8" rims go with 265/75R16. Could you advise me? Thanks, it gets a bit confusing for the novice.
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Follow Up By: That Troopy Bloke (SA) - Monday, Jan 21, 2008 at 00:35

Monday, Jan 21, 2008 at 00:35
Interesting comment about the speedo variation.
I've recently changed to 285/75/16 on my troopy, and I find my speedo is now spot on....within +or-1km/h at all speeds when checked against the GPS.
The bigger tyres do suck some power though.

7" rims are the go for 265/75/16, ya don't need 8" rims unless ya go to 285/75/16.

Cheers
Glenn
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Follow Up By: Member - loris G (NSW) - Monday, Jan 21, 2008 at 00:56

Monday, Jan 21, 2008 at 00:56
Thanks Glen.
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Reply By: TD100 - Friday, Jan 18, 2008 at 20:16

Friday, Jan 18, 2008 at 20:16
Hi,

i had 15s on mine but were quite wide but had no issues with them 33x13.5 STT Coopers(old style)16x8s with 285/75/16s of your choice would be sufficient.cheers Paul
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Reply By: Member - Davoe (Yalgoo) - Friday, Jan 18, 2008 at 20:20

Friday, Jan 18, 2008 at 20:20
If you get 7 inch rims put 235/85 on if 8 inch 265x75
both are "bush freindly" and will allow you to run your splits as extra spares as they are all the same diameter
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Reply By: Bonz (Vic) - Friday, Jan 18, 2008 at 22:41

Friday, Jan 18, 2008 at 22:41
Vote another for 235/85 R16's, Greart tyre size for 7" rims, go the 265/75's for 8" rims tho
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Reply By: Member - Phil G (SA) - Friday, Jan 18, 2008 at 22:57

Friday, Jan 18, 2008 at 22:57
I prefer 235/85 on the 16x6 rims, 265/75 on the 16x7 rims and 285/75 on the 16x8 rims.

Its less likely that the beads come off at low pressures and easier to reinflate tubeless with a standard pump.
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Follow Up By: Member - Davoe (Yalgoo) - Saturday, Jan 19, 2008 at 03:10

Saturday, Jan 19, 2008 at 03:10
Interesting i thought i had 6 inch rims but when i had the trashed MTR pulled off I realized it was a 7 inch. I casually enquired about 265 tyres on it and was told not really.
However they didnt appear to be the most knowledgable lot.
they also had a bit of trouble re inflating the 235 MTR.
I wouldnt fit any wider anyway as they would be illegal (stick out)
and fitting flares isnt a bush freindly option
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Follow Up By: Member - Phil G (SA) - Saturday, Jan 19, 2008 at 23:28

Saturday, Jan 19, 2008 at 23:28
Gday Davoe,
The 265's come standard on 7 inch rims on vehicles like the Prados and 78/79series - so your advisor was taking a guess. Yep, it is hard to reinflate a 235 on a 7 inch rim and it can be even harder to reinflate a 265 on an 8 inch rim. Usually have to have the valves out and a whoosh of air from an airtank or overinflated spare.

The 35mm rubber flares are bush friendly, and are all you need to make it legal.

So when are you getting a new set of MRF's ???
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Follow Up By: Member - Davoe (Yalgoo) - Sunday, Jan 20, 2008 at 00:19

Sunday, Jan 20, 2008 at 00:19
Seriosly thinking about it but dont do the bush work i used too.
Just be aware with the MTR (and probably all radials) i have had some pretty innocous punctures 1 plug dont give it another thought but the tearing/splitting on the inside once pulled off has been very bad. It really opened my eyes especially as i still have 1 mtr carrying a couple of crown plugs (tyre shops wont fix it)
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Follow Up By: Member - Phil G (SA) - Sunday, Jan 20, 2008 at 09:31

Sunday, Jan 20, 2008 at 09:31
Yep, no tyre does everything, and the other thing that's for certain is that our experience is different to yours :-))) I don't reckon you'll find a tyre that you won't puncture!

The Silent Armours I'm travelling on have done 35,000k of just trips now but I staked one on the Madigan Line when it was 2000k old - it was replaced for free under Beaurepaires tyre puncture warranty. I'll go back to MTRs next time round - I like a more aggressive tyre. We travel in groups of up to 10 and out of all the commonly available radials, the MTRs seem to have the least problems. I've only seen one puncture on an MTR on any of our trips over the past few years, and that includes at least 4 sets of MTRs doing the Madigan Line.

The most common tyres I've seen staked are Coopers, Mickey Thompson, Toyo and Bridgestone. BFGs are a mixed bag - some people have a great run, others don't. I know one guy who had 37 plugs in a set of BFGs after a couple of years of remote trips, but they hung together, so he liked them.
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