265 70 on stock mq rims

265 70 on stock mq rims

Postby Rambo474 on Mon May 01, 2017 5:37 pm

Hey guys,

Just wondering if the stock 17 inch triton mq rims would be able to handle a 265 70r17 MT tyre,
I know the standard offset of the triton is +38,
Would this cause the tyre to scrape the shocks?
If so would a +20 / +22 rim do the trick?

Cheers.
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Re: 265 70 on stock mq rims

Postby L200Shogun on Mon May 01, 2017 7:08 pm

Standard +38 will work so will +20 or +22
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Re: 265 70 on stock mq rims

Postby Rambo474 on Tue May 02, 2017 9:55 am

L200Shogun wrote:Standard +38 will work so will +20 or +22


But would having a positive 38 offset and running that tyre cause the tyre to scrape on the shocks and so on?
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Re: 265 70 on stock mq rims

Postby L200Shogun on Tue May 02, 2017 1:09 pm

No, many run them never seen issues reported. Some even run 285 on +38 rims
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Re: 265 70 on stock mq rims

Postby Rambo474 on Tue May 02, 2017 1:30 pm

L200Shogun wrote:No, many run them never seen issues reported. Some even run 285 on +38 rims


Awesome:) thank you for the respose mate, cheers
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Re: 265 70 on stock mq rims

Postby beej75 on Sun May 07, 2017 11:35 am

I'm thinking of doing this also (265/70 on the stock 17 x 7.5 alloys). There are a few threads in here commenting that lots of folk run this setup.

One thing I haven't seen mentioned too​ much is: can you reconfigure something in the dash computer to allow for the larger circumference tyre? So the speedo and odo are accurate?

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Re: 265 70 on stock mq rims

Postby Kezza on Tue May 09, 2017 5:16 am

i run 265/70/17 procomp extreme at's on stock gls rims no lift and had no scraping or rubbing at all
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Re: 265 70 on stock mq rims

Postby gartam on Mon May 15, 2017 11:03 am

You wont need to have the speedo adjusted. I put 265/75R16 on my glx+ and now the speedo works within 1klm of the real speed. Mitsubishi seem to make their speedo's way out. I have a 2015 fuso truck and sitting on 108klm/h on the speedo is 100 on the gps.
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Re: 265 70 on stock mq rims

Postby Ray57MQ on Mon May 15, 2017 11:28 am

gartam wrote:You wont need to have the speedo adjusted. I put 265/75R16 on my glx+ and now the speedo works within 1klm of the real speed. Mitsubishi seem to make their speedo's way out. I have a 2015 fuso truck and sitting on 108klm/h on the speedo is 100 on the gps.

Kezza wrote:i run 265/70/17 procomp extreme at's on stock gls rims no lift and had no scraping or rubbing at all


Kezza, how was your speedo accuracy after fitting the 265/70 on 17's ? thinking of doing the same.
Wondering if a similar result as gartam found with 265/75 on his 16 rims ?

Cheers.
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Re: 265 70 on stock mq rims

Postby ShayeWA on Mon May 15, 2017 1:41 pm

gartam wrote:You wont need to have the speedo adjusted. I put 265/75R16 on my glx+ and now the speedo works within 1klm of the real speed. Mitsubishi seem to make their speedo's way out. I have a 2015 fuso truck and sitting on 108klm/h on the speedo is 100 on the gps.



Every tyre place I've spoken to says I can't put hose size tyres on my standard 16" rims......


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Re: 265 70 on stock mq rims

Postby ag9111 on Mon May 15, 2017 2:03 pm

Tell them to just do it
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Re: 265 70 on stock mq rims

Postby beej75 on Mon May 15, 2017 6:59 pm

Interestingly​, according to this tyre size calculator (https://tiresize.com/tyre-size-calculator/) those 2 combinations (265/75 R16 and 265/70 R17) have almost the exact same overall diameter.

I've now seen/been shown half a dozen examples of the 265/70 on the stock 17x7.5 rims (on FB) so I'd say it def works. I'm certainly going to do it.

The only issue I can foresee is that while the diameter increase may make the speedo more accurate, I'm reading elsewhere that the odometer is already close to accurate, and that the difference can play silly buggers with things like the consumption figures, range etc on the instrumentation computer.

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Re: 265 70 on stock mq rims

Postby ag9111 on Mon May 15, 2017 7:14 pm

I have not seen a computer in a triton nor pajero that is correct.
I ignore the accuracy of mine but use it as a comparison.
It read 8 yesterday. It reads 8 today. If it reads 9 tomorrow i have a problem.
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Re: 265 70 on stock mq rims

Postby Kezza on Thu May 18, 2017 1:06 pm

Ray57MQ wrote:
gartam wrote:You wont need to have the speedo adjusted. I put 265/75R16 on my glx+ and now the speedo works within 1klm of the real speed. Mitsubishi seem to make their speedo's way out. I have a 2015 fuso truck and sitting on 108klm/h on the speedo is 100 on the gps.

Kezza wrote:i run 265/70/17 procomp extreme at's on stock gls rims no lift and had no scraping or rubbing at all


Kezza, how was your speedo accuracy after fitting the 265/70 on 17's ? thinking of doing the same.
Wondering if a similar result as gartam found with 265/75 on his 16 rims ?

Cheers.



its about 2klm/h out at 100 compared to the gps
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Re: 265 70 on stock mq rims

Postby Ray57MQ on Thu May 18, 2017 2:05 pm

[/quote] its about 2klm/h out at 100 compared to the gps [/quote]

OK, cheers - thanks for that !
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Re: 265 70 on stock mq rims

Postby gartam on Fri May 19, 2017 6:06 am

I work in the tyre industry and you can fit 265/75R16 on a rim with of between 7 and 9 inches. They also balloon better when you drop the pressure.
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Re: 265 70 on stock mq rims

Postby ag9111 on Fri May 19, 2017 6:33 am

When you drop tyre pressures its not about the ballooning of the tyre, its about lengthening the contact patch.
Think tank tracks.
Ballooning of the tyres is actually a negative as it further exposes the soft side wall to damage
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Re: 265 70 on stock mq rims

Postby Duck on Sat May 20, 2017 7:03 pm

long and thin better than short and fat, sounds OH so wrong.
But is correct.
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Re: 265 70 on stock mq rims

Postby gartam on Mon May 22, 2017 3:46 am

The only 4x4ing i do is on sand at the beach so i dont worry about side wall damage because its all soft. I drop my pressures to about 13 psi and it just glides over soft sand barely have ti engage 4h.
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Re: 265 70 on stock mq rims

Postby beej75 on Fri Jun 23, 2017 12:01 pm

So, does anyone know the legal implications of driving an unroadworthy vehicle when it comes to tyres that exceed the maximum increase in diameter over standard?

Reason I ask is that the 265/70 17's are greater than 50mm diameter above 245/65 17, and in VIC and NSW at least, that's considered unroadworthy.

Yet ... plenty of people do this. Just look through the members rides pages and you see heaps of folk running 265/75 16s (slightly bigger again), some genuine 32s, 33s too.

Do all these folk have some kind of certification? Or is running the gauntlet the norm? Or is there written somewhere officially (on the vehicle placard) a size bigger than 245/65 17 as the biggest stock tyre for an MQ?

I have no problem exceeding the limit by 2.3mm from a safety point of view. My only concern would be in the event of an at-fault accident (which nobody plans for, but is a possibility), does a 3rd party's lawyers have grounds to make things worse because the vehicle would fail a roadworthy assessment?
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Re: 265 70 on stock mq rims

Postby gartam on Fri Jun 23, 2017 6:06 pm

They are very unlikely to pick on you because it doesn't look like its over the top. There are hilux's, cruisers and patrols running around here with at least 5 inch lifts that aren't certified. They dont seem to do nothing. There is even a dirty old 60 series cruiser running on 37's. He had to lift it so high because the tyres dont even fit in the wheel arches.
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Re: 265 70 on stock mq rims

Postby beej75 on Fri Jun 23, 2017 9:23 pm

It's not the 'getting around' part that bothers me. It's the 'coming to an abrupt halt' part and the how the legalities see this modification contributing to said halt that concerns me.

It all seems a little grey to me anyway. Why did they pick 50mm? Why not 52mm? Why not 48? If someone driving a 4WD with wheel/tyre combo 60mm greater than standard loses control and crashes into and injures a driver of another car, does that driver (or their lawyers) simply hold up document VSI8 and say "You're f**ked"? What if it did actually contribute to the crash? What if it didn't?

Anyway ... I've sent an email to VicRoads to ask. Specifically, is the 50mm figure calculated on paper, or measured on the car? Since the real world increase from the stock 245/65 17s 750.3mm diameter to 265/70 17s 802.8mm diameter will be different to the 52.5mm on paper, thanks to the vehicle weight resting on and compressing the tyres, and these tyres compressing differently due to their different circumferences. It would be interesting math to solve prior to purchasing tyres, but I'd have a crack if their answer is "measured on car".

But ... as I said earlier, I have zero problem with doing it. Even with 52.5mm taller tyres, it'll still be safer in a swerve than a Hilux.

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Re: 265 70 on stock mq rims

Postby RHKTriton on Sat Jun 24, 2017 2:46 pm

The 50mm is probably an arbitrary figure they settled on: KISS!

It is likely to be well within manufacturer's design parameters to meet general safety requirements.

I've also thought about the argument of the radius at point of contact with the road, where it'll always be less than a tyre in the air.

At bingle time, what is probably looked at first is the amount of and condition of tread, brake pads, fluid leaks and how fast you were travelling relevant to prevailing conditions. This after they've sucked out and tested your blood, checked who you're insured with and if you've got savings in the bank! :lol:

More seriously, there seem to be a lot of extremely modded fourbys on the road that just don't seem legit.
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Re: 265 70 on stock mq rims

Postby Duck on Sun Jun 25, 2017 12:47 pm

If it comes to it you are driving an unroadworthy vehicle, so no insurance at all. It would be the insurance company rather than police or mainroads. If they can find a way out of paying then they will. Never mind if you a fatality was involved.
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Re: 265 70 on stock mq rims

Postby Ray57MQ on Sun Jun 25, 2017 3:55 pm

Duck wrote: I like ve the look of the big tyres but not interested in sharing a cell with Mr Dover first name Ben.


:shock: :lol:
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