Patrol and Goodrich 245/75 R16 tyres

Submitted: Friday, Apr 25, 2003 at 20:38
ThreadID: 4562 Views:4703 Replies:7 FollowUps:9
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I want to upgrade my Patrol with Goodrich mud terrain. Currently have the stock, Bridgestone 265/70R16. I have a campertrailer with 15" tyres and ideally would like to have an interchangeable setup. My problem is the trailer is better suited to the 245 rather than 265. If I were to go for the Mud terrain it has to be 265/75 which then increases tyre size and therefore gearing ratios and speedometer error. At last, my question is, does anybody know if downsizing to the 245/75 R16 would cause any problems for the Patrol? Ie, handling, cornering, breaking, traction on hills etc. Any suggestions, experiences please?
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Reply By: tristjo - Friday, Apr 25, 2003 at 21:01

Friday, Apr 25, 2003 at 21:01
DONT DO IT!!!!!

My brother put a set of 245/70/16's on his GQ, and as a result, it rides rough, and has lost some offroad ability, due to the lack of flexability in the sidewall. They handle brilliantly, being a fairly low profile, but in my oppinion, there are just to many downsides to decreasing rolling radius. The reason my brother went for the 245's was because they kept the same rolling radius as the tyres on 15 inch rims. I would go for the 265/75/16's as they would give it added height and increased offroad ability, and are a more common size for outback travel. There are also other factors to consider when trying to get an interchangable setup with your car and trailer tyres, such as offset of the rim etc. The best, but unfortunatly not the cheapest solution, is to buy, say 9 tyres and rims all exactly the same size, profile, offset etc, but if you keep your eye out in the trading post, you could grab a bargain. I saw a set of 4 GU rims and half worn tyres in there the other week, for $400, which isn't to bad. Hope this has helped. Tristjo
AnswerID: 18368

Follow Up By: Lou - Sunday, May 11, 2003 at 21:17

Sunday, May 11, 2003 at 21:17
Dear Tristjo,
Thanks, basically I've taken your advice.
Regard,
Lou.
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FollowupID: 12498

Reply By: Kev - (Cairns,QLD) - Friday, Apr 25, 2003 at 23:20

Friday, Apr 25, 2003 at 23:20
I wouldn't down size just for a trailer and who cares if the speedo is out, mine has been out for years !
AnswerID: 18373

Follow Up By: Lou - Sunday, May 11, 2003 at 21:18

Sunday, May 11, 2003 at 21:18
Dear Kev,
Thanks, you're right!
Regards,
Lou.
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FollowupID: 12499

Reply By: Truckster (Vic) - Saturday, Apr 26, 2003 at 09:44

Saturday, Apr 26, 2003 at 09:44
1) dont downsize tires cause of your trailer!

2) dont go with BFG KM tires.. they arent the tire they used to be. Look at Coopers ST's or Goodyear MTR's.

3) Nissan sell the plastic gears to change the speedo if you change tire sizes

4) why the hell would you downsize tires!!! you would be the first one in history!

5) the trailer is better suited to the 245 rather than 265 I would rather put the trailer out than the car. You drive the car every day of the year, the trailer gets a run every once in a while.

6) why does it "HAVE" to be a 265/75?
AnswerID: 18377

Follow Up By: Lou - Sunday, May 11, 2003 at 21:20

Sunday, May 11, 2003 at 21:20
Dear Truckster,
You're right, the car will take preference.
Regards,
Lou.
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FollowupID: 12500

Reply By: ray91 - Saturday, Apr 26, 2003 at 12:40

Saturday, Apr 26, 2003 at 12:40
The 31x10.5x15 tyres should be the same diameter as the 265/70/16 you have now.Also a lot cheaper
AnswerID: 18384

Follow Up By: Lou - Sunday, May 11, 2003 at 21:21

Sunday, May 11, 2003 at 21:21
Dear ray91,
Thanks for the advice.
Lou.
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FollowupID: 12501

Reply By: Member - Andrew - Saturday, Apr 26, 2003 at 14:38

Saturday, Apr 26, 2003 at 14:38
Hi Lou,

I pondered tyre changes recently on having worn out my first set of tyres on my GU Patrol. I eventually purchased 265/75 R16. The reasons for the change was partially the reduced price on the BF Goodrich in the 265/75 size. By going to an increased rolling diameter it dropped the price significantly. Secondly, the ride become marginally more comfortable.

I have just completed 6,000 km through the Oodnatdatta track, Simpson and Strezlecki track back to Sydney without any concerns ( no punctures at all , ran mainly 35psi).

Additionally, I decided to go with the All Terrain tyres as most your time is actaully spent on the road. My thoughts where to go with the queiter more durable All Terrains.

Cheers
Andrew

PS I know this is not related to your trailer question but may help generally.
AnswerID: 18388

Follow Up By: Lou - Sunday, May 11, 2003 at 21:23

Sunday, May 11, 2003 at 21:23
Dear Andrew,
Thanks for your advice.
Lou.
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FollowupID: 12502

Reply By: desert - Sunday, Apr 27, 2003 at 12:11

Sunday, Apr 27, 2003 at 12:11
All GU Patrol cab-chassis run 265/75x16 tyres. What is your problem, just change the speedo gear to suit.
AnswerID: 18490

Follow Up By: Lou - Sunday, May 11, 2003 at 21:25

Sunday, May 11, 2003 at 21:25
Dear desert,
I probably will change the speedo gear. Do you know if this can only be done by a Nissan service centre or by any mechanic?
Lou.
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FollowupID: 12503

Follow Up By: Truckster (Vic) - Sunday, May 11, 2003 at 21:41

Sunday, May 11, 2003 at 21:41
The speedo gear can be doen by yourself, its on the outerside of the gearbox.
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FollowupID: 12508

Reply By: Phil G - Sunday, Apr 27, 2003 at 21:52

Sunday, Apr 27, 2003 at 21:52
Your standard 265/70R16s, the 245/75R16 and the 31x10.5R15 are all the same diameter, so you in terms of diameter you are not downsizing. But I agree that you are best going for 265/75R16 because taller tyres are better.

I've got a set of 245/75R16 Mud-terrains and want to upsize them to 265/75R16 on the Prado. Problem is that the Mud Terrains are indestructable and I'm still trying to wear them out.

The 245/75R16 M/Ts are a very strong tyre and have a load rating of 120 (equivalent to the old 10 ply tyres). They handle fine and on the Prado don't seem very noisy. Need to run about 40-45 psi on the bitumen, and I run at 25psi on dirt.
AnswerID: 18538

Follow Up By: Lou - Sunday, May 11, 2003 at 21:29

Sunday, May 11, 2003 at 21:29
Dear Phil G,
I am going to upgrade to the 265/75 M/T. Is your advice about air pressure from experience or was that recommended by the supplier? I'm going to leave the 245/75 on the trailer.
Lou.
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FollowupID: 12507

Follow Up By: Phil G - Sunday, May 11, 2003 at 21:52

Sunday, May 11, 2003 at 21:52
Hi Lou,

I actually just upgraded to a set of Goodyear MTR 265/75R16 last week. They are a quieter tyre than the BFG M/T and look the goods. Cost about the same price. They have a 3 ply construction the same as the BFG and are supposed to chip less. Anyhow, first impressions are that they are a good tyre. See how they go over time.

Air Pressure is from experience. I found wiith lower pressures on teh bitumen that the Muddies wore out badly on the edges. I needed the extra pressure to make them wear reasonably on bitumen.

For the last 4 years I've been running 25 psi as soon as I leave the bitumen and have had no punctures despite lots of bush trips. The outback places always tell you to lower your pressures, keep below 80 kph and don't overload and you won't get punctures. I think they're right.
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FollowupID: 12512

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