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Help on MTR's

General Tech Talk

Moderators: toaddog, TWISTY, V8Patrol, Moderators

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Help on MTR's

Post by ozy1 »

ive been doing a bit of reasearch and noticed in America they sell MTR's in 305/70/16, will we be getting these in AUstralia, or are they only for america, if we can what sorty price we looking at in SYdney?

Shawn
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Post by blu125 »

I have asked this question of of the G/Year rep monthly for about 18 mnths. and the answer has always been "we're not sure if they'll sell", yet they bring in the 37". I know we sell plenty of 305/70R16 radial Claws, but I've NEVER sold a 37" radial anything. But I'm just a Dealer, I don't know anything.
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tyres

Post by MUSS »

whats the 305/70/16R equal to in inches? :? :D
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Post by ozy1 »

it measures a true 33"

where as a 33x12.5 measures 32. 5 or so
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Post by MUSS »

but i seen specs that say 285x75x16r are equal to 33.1x11.2x16 seen that on the bf goodrich www???????? :shock: :shock:
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Post by ozy1 »

285/75/16 are eq to 33x11.2ish

im pretty sure the metric mesaurments are 285 diameter ot height, not sure, but the 75 is the percentage of the previous to give width

so when worked out 305/70/16 = 33x12.2
and 285/75/16 = 33x11.2
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Post by bogged »

ozy1 wrote:it measures a true 33"
where as a 33x12.5 measures 32. 5 or so


here have a look at my 33x12.5 MTRs against the 33x12.5 BFG pre KMs

http://www.gqpatrol.com/mtr.htm
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Post by MUSS »

awwe ok i think i get it :? :rofl:
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Post by Area54 »

ozy1 wrote:285/75/16 are eq to 33x11.2ish

im pretty sure the metric mesaurments are 285 diameter ot height, not sure, but the 75 is the percentage of the previous to give width

so when worked out 305/70/16 = 33x12.2
and 285/75/16 = 33x11.2


The '285' is the width in mm, the '75' is the profile height in percent of width.
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Post by ozy1 »

oh, thanks for clarifying that Area54,
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Post by bogged »

on the car my MTR's are an inch+ smaller than the BFG.

Image
the size measured on the car
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Post by Wendle »

I thought they only made 37's and 40's :silly:
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Post by blu125 »

Speaking in general terms - a 305/70R16 is usually formed in the same mould as a 33/12.50R15. Only the hole in the centre is different. The overal diameter should be about 32.4". A 285/75R16 is about 32.9". (Forgive me I'm working from memory). There is naturally some variation between manufacturers but it is normally not significant.

The old BFG Baja 33's were a size that doesn't meet the Australian Tyre & Rim association guidelines regarding diameter (which is absolutely meaningless), and who cares. One third of an inch divided by two is not really a significant loss of ground clearance, and shouldn't mean you'll ever have to spend an extra night in the bush.
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Post by BeZeRK »

hey bogged.... just curious, on my 4runner the old BFGS in a 32" scrub slightly.. do you think i would be able to squeezein the mtr 33s if they are smaller??
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Post by v8grunt »

Goodyear have 315/75r16 and 305/70r16 on the water and will arrive soon, the 307/70r16 measures 32.7" tall as do the majority of 33/12.50r15.

glen
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Post by bogged »

BeZeRK wrote:hey bogged.... just curious, on my 4runner the old BFGS in a 32" scrub slightly.. do you think i would be able to squeezein the mtr 33s if they are smaller??



NFI but I dont see why not... but then again I dont see any advantage either.

Buy new 32 MTR's... Save the $$
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Post by BeZeRK »

true... ;)
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