285/75R16 vs 305/75R16?? Help Me Decide?

Advice on the right rolling stock for your 4WD
hi1ux
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285/75R16 vs 305/75R16?? Help Me Decide?

Unread post by hi1ux » May 20th, 2014, 9:27 pm

Evening all.

Finally managed to get shot of the factory rims with the appalling Spanish tyres the stealer put on before I bought the car.

I have decide to go some black Sunnys in a -13 offset and will be wrapping them in the new Mickey Thompson ATZ P3s. This will be for my 08 patrol GU IV which has a 2" suspension lift.

The car is mainly a tourer and planning to get the Simmo under the belt next year.

I have a set of 285/75R16 MTZs which I love, but want to keep them off the car when on the black stuff day to day... Not much wet stuff out here in rural QLD so will manly be driving on rocks, shale, dirt roads, sand, and bitumen.

I was quoted $40 more per tyre for the 305's.

I am unsure on which tyre to go for, they are both very close in overall diameters. What do people reckon? Go the 305's or stick with 285's?? (Don't try to convince me on a different brand please, just chasing info on 305s vs 285s)

MasterInnovator
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Re: 285/75R16 vs 305/75R16?? Help Me Decise

Unread post by MasterInnovator » May 20th, 2014, 10:01 pm

Being that it is mainly a tourer, I would stick with the 285's. With all the km's a typical tourer does, you would benefit from the better fuel efficiency (wider you get the more the fuel consumption increases). And being a tourer how often are you going to really need the extra traction the 305's may provide. That's my opinion anyway and I'm sure others could also provide there's
Cheers MI

Peter Aawen
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Re: 285/75R16 vs 305/75R16?? Help Me Decide?

Unread post by Peter Aawen » May 21st, 2014, 11:54 am

The only thing the 305's will really give you is extra width!! :eek:

Extra width on a 4WD tyre isn't usually of great benefit, rarely provides any extra traction (the extra length of the footprint does that as you drop tyre pressures, not width! So you don't want your tyres to 'bag' if you can avoid it!) and if you do a fair bit of bitumen driving, that extra width will generally whack your fuel economy thru the roof too!! Sure, if you wanted to run 315/75R16's to get taller tyres (virtually 35's instead of 33's) there might be some benefit to outweigh the costs, but for just 305's, save your $$!!

Even off road, the 305's will be imposing a greater rolling resistance & therefore cost more power/fuel from the engine to drive, and they won't give you a heap of EXTRA benefit over the 285's when you drop your tyre pressures, plus there will still be the cost/power/fuel imposition from the greater width; and all without any real improvement in height to allow lower pressures/longer footprint to counteract that..... :( So stick with the 285's & put the $$ into some more worth while mods or even just paying for the fuel to get out there some more! ;)
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hi1ux
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Joined: March 26th, 2009, 12:50 pm

Re: 285/75R16 vs 305/75R16?? Help Me Decide?

Unread post by hi1ux » May 23rd, 2014, 2:36 pm

thanks everyone... i have decided to go for the 285/75/16's.. this way they line up with my current fleet of mud tyres...

Aaron Schubert
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Re: 285/75R16 vs 305/75R16?? Help Me Decide?

Unread post by Aaron Schubert » May 24th, 2014, 11:36 am

Yeah, save your fuel. No need for 305s

Aaron
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