different tyre size.

Submitted: Monday, Jun 24, 2013 at 20:33
ThreadID: 102936 Views:1778 Replies:4 FollowUps:1
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The D max comes standard with 245 /70/ 16 tyres after much thought I decided to put 245 /75 /16 on. On the black top good move, does it easy. In the bush just as good, low range is better.
However Towing !!! Different kettle of fish, whilst only have towed for a few K's (50 )prior to leaving on sat, the D max was working harder and now seemed to struggled in 5th. Don't normally tow in 5th but last hols used 5th when could and max handled it easy, not now. Will get a better idea after the hols , but WOW the different aspect ratio between 70 and 75 when towing really plays a part. Now thinking of a chip.
Caravan weighs 2700kgs. Will give better report when back so people thinking of altering tyre size have more info.

Cheers Warren
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Reply By: Aussi Traveller - Monday, Jun 24, 2013 at 20:47

Monday, Jun 24, 2013 at 20:47
My Colorado 2011 model came with 245/70/16s and it was 8 kph out, having a lift kit I put 265/75/16s on and the speedo is spot on and it tows the 5 mtr boat or the camper just fine.

AnswerID: 513751

Reply By: Grant L - Monday, Jun 24, 2013 at 22:19

Monday, Jun 24, 2013 at 22:19
Hi warren,
Did exactly same with my Colorado 2010 and lost up to 1ltre /100klm pulling van with ATM2550 extra stress on clutch and gear box overall fuel consumption very good (18/100 worst 14.8/100 best) but done 45,000klm and can't wait to replace with original 245/70x16 tyres. Also after fitting 245/75x16 tyres went for 3" exhaust and K& J air cleaner element which appears to help mid range torque.

AnswerID: 513761

Follow Up By: Warren B - Tuesday, Jun 25, 2013 at 19:25

Tuesday, Jun 25, 2013 at 19:25
Hi grant, we use the max for bush work as well, and with the new tyres in the bush its great. I think the fuel consumption is going to suffer I just wasn't prepared for the difference the tyres made.
I have an after market suspension kit fitted and lifted 2" was going to put 265 / 75 on glad I didn't.
Cheers Warren
FollowupID: 792570

Reply By: Grant L - Tuesday, Jun 25, 2013 at 21:31

Tuesday, Jun 25, 2013 at 21:31
Hi Warren,
Can understand your thoughts have done a bit of bush work with mine through the Simpson late October 2012 (to late) too hot with standard suspension and too much weight, sailed up most dunes including big red without rev-ing it at all, but still putting too much stress on drive train with wrong size tyres I think . Got 130k on mine so far very happy with it although think its probably a bit agricultural to some of the more modern utes.

AnswerID: 513805

Reply By: outbackjoe - Wednesday, Jun 26, 2013 at 16:05

Wednesday, Jun 26, 2013 at 16:05
That's the nature of the game when putting on bigger tyres. It shifts your gearing up, putting extra stress on everything and making it feel like power is lost. Fuel consumption typically increases. Also impacts the brakes - you have to push the brake pedal harder to achieve an equivalent deceleration. Go too big and your brakes won't be strong enough to get close to locking up in an emergency stop. Just need to weight it up against the advantages.
AnswerID: 513821

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