Tyres- 265x75x16 or 235x85x16

Submitted: Saturday, May 02, 2015 at 17:26
ThreadID: 117698 Views:2916 Replies:9 FollowUps:6
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Hi All
I currently have a 2006 Troopy with 16x7 steel rims. At present I am running A/T 265x75x16 and these are due for a change. I am considering going to the narrower 235x85 as the current tyres are right on the edge of the body work plus it may be slightly more fuel efficient.
Can anyone think of any other benefits of going with either tyre?
They are both common and the price for the 235x85 is about $30 less per tyre.

Cheers

Mark
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Reply By: Dennis Ellery - Saturday, May 02, 2015 at 21:08

Saturday, May 02, 2015 at 21:08
I have a 2008 Troopy.
Mostly used for towing a 3 tonne caravan on hard surfaces such as bitumen or corrugated gravel roads and sandy beaches.
The original skinnies that came with the vehicle were much more fuel efficient when towing the caravan and the current 265 tyres are a bit better in sand but less efficient on the road.
AnswerID: 553200

Reply By: gbc - Sunday, May 03, 2015 at 06:58

Sunday, May 03, 2015 at 06:58
The 235 is a fair bit taller than the 265 if I remember correctly? Generally fuel economy suffers a little turning a bigger diameter tyre, but they would suit a troopy perfectly in size for off-roading. It is a very common tyre size in the states for jeepers. A turbo 6 or v8 troopy wouldn't notice the slightly larger tyres. My ranger has moved up to 265's from oe and has exactly the same mileage once the diameter change is taken into account.
265 will have less squirm on the road, handle better and need less air to combat sidewall movement. Also more common.
If you are a solid offroad tourer, the 235 would be in the lead. More onroad and towing, the 265 is going to behave better.
AnswerID: 553204

Follow Up By: Bob Y. - Qld - Sunday, May 03, 2015 at 22:04

Sunday, May 03, 2015 at 22:04
gbc,

I was always under the impression that 265's and 235's, as well as the "old" 750 x 16, are all the same diameter. Or at least so close that they all read about the same on the speedo?

Bob

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Follow Up By: get outmore - Tuesday, May 05, 2015 at 15:40

Tuesday, May 05, 2015 at 15:40
thats right bob - tyres marked the same buit different brands can vary a bit but basically what you say is correct
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Follow Up By: gbc - Tuesday, May 05, 2015 at 16:42

Tuesday, May 05, 2015 at 16:42
Yes, I was thinking 255/85 and writing 235/85. The 255/85 is a 33 in the old scale, 235 is a 31 as is the 265/75. Sorry if I created confusion.
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Follow Up By: get outmore - Tuesday, May 05, 2015 at 18:49

Tuesday, May 05, 2015 at 18:49
32s actually - the old 15 inch wheels were often shod with 31s
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Reply By: Slow one - Sunday, May 03, 2015 at 07:55

Sunday, May 03, 2015 at 07:55
As Dennis said the 235's will be more fuel efficient. You will have no problems with speed error or gearing as the tyres are virtually the same except for the width.

I would buy them with the $120 saving involved.
AnswerID: 553207

Reply By: happytravelers - Sunday, May 03, 2015 at 10:25

Sunday, May 03, 2015 at 10:25
Hi Mark

I also run 235/85 R16 tyres for the same reason, as any wider and they will stick out of the guard. Mine are also due for replacement and I'm interested to know what sort of prices you've been quoted for what brand tyre in that size, I am currently running Toyo A/T's. I'm in SE Qld.

Many Thanks

Jon
AnswerID: 553220

Reply By: 671 - Sunday, May 03, 2015 at 20:01

Sunday, May 03, 2015 at 20:01
Mark

There is a little information on 235s and wider tyres in this link.

http://www.outbackcrossing.com.au/FourWheelDrive/Truth_About_4WD_Tyres.shtml
AnswerID: 553252

Reply By: Twintrail(W.A.) - Sunday, May 03, 2015 at 22:04

Sunday, May 03, 2015 at 22:04
mark 04 I was under the impression 235 x85 was the largest tyre you could put on a 16x7 rim regards
AnswerID: 553265

Follow Up By: AlbyNSW - Monday, May 04, 2015 at 05:49

Monday, May 04, 2015 at 05:49
265' are fitted factory on a number of OEM Toyota 16x 7 rims
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FollowupID: 839062

Follow Up By: get outmore - Tuesday, May 05, 2015 at 10:17

Tuesday, May 05, 2015 at 10:17
nope - 235s fit better on a 6 inch rim 265s fit best on a 7 inch although its not overly important
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FollowupID: 839149

Reply By: Bob Y. - Qld - Sunday, May 03, 2015 at 22:15

Sunday, May 03, 2015 at 22:15
Mark,

I've used both 235 and 265's, albeit on 2 different vehicles.

The 265's can be hard to fit, that is "popping" the tyre onto the beads, though you mightn't have that worry with 16 x 7" rims. Been using 235's on 7" rims on my 79 series for about 10 years, and have had no dramas.......though like most tyres out here, they don't wear well.

The narrower tyres are quite often better in muddy conditions, being able to "cut" down to a harder base......if the terrain has a hard base. :-). I'd be going for the 235's, both cheaper and lighter.

Bob

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AnswerID: 553267

Reply By: Mark O4 - Monday, May 04, 2015 at 20:13

Monday, May 04, 2015 at 20:13
Thanks everyone for the replies......much appreciated and it looks like the 235 x 85 wins.

Cheers

Mark
AnswerID: 553317

Reply By: get outmore - Tuesday, May 05, 2015 at 10:15

Tuesday, May 05, 2015 at 10:15
not sure what your basing 235s being cheaper on??

I ran them for years and it depends on tyres places etc 265s were nearly always cheaper and more likely to be on special due to thier popularity
AnswerID: 553336

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