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MTRs Fuel Economy

Tech Talk for Nissan owners.

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Posts: 159
Joined: Tue Apr 27, 2004 12:15 pm
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MTRs Fuel Economy

Post by GQAndrew »

Guys,

Recently I changed by worn out BFG AT's (probably 20% tread) to new MTRs, same size 285/75R16. I have noticed that my fuel economy has gone from 11.7L/100kms with the BFGs to 13.8L/100kms with the MTRs. The other factor could be that I have probably been running the Air Con about 80-90% of the time lately as well.

Do you think that the change to a more aggressive tread, and increased use of the AC can have an effect of around 2L per 100kms

Bye the way, its a TD42 (non turbo), fuel figures are combined Highway/City.


Cheers for any help
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Re: MTRs Fuel Economy

Post by bogged »

aggressive tires do cause worse fuel use, but so will air cond

whats the actual measurement of both tires? not just 265, actual measurement
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Posts: 159
Joined: Tue Apr 27, 2004 12:15 pm
Location: WA

Re: MTRs Fuel Economy

Post by GQAndrew »

bogged wrote:aggressive tires do cause worse fuel use, but so will air cond

whats the actual measurement of both tires? not just 265, actual measurement
Cant find that info on the website, may have to measure them
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Post by chimpboy »

The biggest difference in fuel economy from a tyre swap would, imho, be from the mass of the tyre. Heavy tyres are lots of work to turn, especially when starting and stopping.
This is not legal advice.
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Post by fnqcairns »

I am getting 12.5L/100km same engine, if the motor is running the aircon is on!
Have yet to test it in cooler weather. I suspect mid to low 11L/100k without aircon.

As far as bolt on the outside accessorys there is none on my car yet.

Sounds resonable to me at least half could be the aircon.

cheers fnq
*JUST LUV IT* 96 GQ LWB TD4.2, Cav, Kings, Dobinsons, Motorguard, Enginesaver, 400 pro, Cooper ST's (rolls eyes), fleetguard oil filters, Delo 400 engine oil, Delo ESI gearbox oil and an RTC.
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Post by festy »

When I put new tyres on my patrol, it started using about 10% more fuel - or so I thought, until I measured the circumference of the old and new tyres, and found almost 10% difference :)
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Post by GRINCH »

with the deeper tread as well as the side wall tread your new tyres will be pushing a lot more air. a new radial claw will loose around 40hp on the dyno compared to an all terain.
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Post by chops »

MTR have silica compound in them.. has some car like properties (wet weather handling/braking) inlcuding less rolling resistance = greater fuel economy
1988 351W GQ wagon
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Post by bogged »

chops wrote:MTR have silica compound in them.. has some car like properties (wet weather handling/braking) inlcuding less rolling resistance = greater fuel economy
keep telling yourself that you will end up believing it :rofl: :rofl: or did I miss the ;) :?:
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Post by chops »

we can't all be ignorant ;)
1988 351W GQ wagon
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Post by bogged »

chops wrote:we can't all be ignorant ;)
we cant all believe the crap told to us by the tire shop. :finger:

Id have MTR's again tomorrow in aheart beat, but what they told u is pure bovine faeces.
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