15 Inch wheels on a D-Max

Submitted: Sunday, Oct 14, 2018 at 20:55
ThreadID: 137341 Views:1104 Replies:3 FollowUps:15
Has anyone fitted 15"x7" wheels with 31x10.5x15 tyres to a Isuzu D-Max ?
I have four sets of ex-landcruiser rims with tyres 31x10.5x15 on 7" rims in the shed that I would like to fit to my D-Max (one set at a time. lol ) which has 16"wheels.
It`s just a bit awkward for me to fit them to check for clearance etc at the moment so I thought it easier to ask here.

Thanks,
Scrubby.
I don`t know where i`m going but i`m enjoying the journey.

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Reply By: IvanTheTerrible - Sunday, Oct 14, 2018 at 20:59

Sunday, Oct 14, 2018 at 20:59
Landcruiser rims have a major difference in offset but will bolt up
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Follow Up By: Member - Scrubby (VIC) - Sunday, Oct 14, 2018 at 21:43

Sunday, Oct 14, 2018 at 21:43
Yes thanks Ivan,
I think the stud patten and PCD will be the same, it`s the offset I am not sure about.
I don`t know where i`m going but i`m enjoying the journey.

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Follow Up By: RMD - Sunday, Oct 14, 2018 at 22:44

Sunday, Oct 14, 2018 at 22:44
A Dmax has around 30mm to 33mm positive offset in model range/age and LC rims have near to no offset or negative offset depending on model. Therefore I would think none of them will fit or be usable even though the pattern and caliper clearance may seem ok. 30 mm or more of the rim outside where the OE rims sit is a BIG change. The forward rotation of the tyre edge will most likely drive the tyre into the foot well or into the front of the guard edge,


The other things is the centre of tread will be way outward from the OE rims and vehicle weight will then be taken by the outer bearing of the front axles instead of the inner bearing as the weight bearing member.

ESC and ABS system is not programmed for the change in braking torque steer which it will cause.
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Follow Up By: Member - Phil G (SA) - Sunday, Oct 14, 2018 at 22:59

Sunday, Oct 14, 2018 at 22:59
Just to add:
- Centre bore on Dmax is 100mm and on Landcruiser rims are 110mm so they will no longer be hubcentric
- And the Dmax studs are pretty short. Some mags don't have a lot of thread on the wheel nuts, but steel wheels should be OK
- Usually 15" don't go on any 4wd these days because the calipers hit the rim
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Follow Up By: RMD - Monday, Oct 15, 2018 at 08:01

Monday, Oct 15, 2018 at 08:01
The Dmax has very close to the same thread engagement with either steel or mag wheel is fitted. The nuts sit in slightly different positions. With both nut types there is more than a full stud dia of grip, therefore no additional strength is possible.
I measure a 2011 model and the mag has 18 to 19 mm engagment with the appropriate nuts. Less with the steel wheel nuts but still far mor than the stud dia.

Dmax studs don't need to be longer, and are not short. Length of stud is correct.
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Follow Up By: Member - Phil G (SA) - Monday, Oct 15, 2018 at 08:17

Monday, Oct 15, 2018 at 08:17
Yes, no problems with the factory mags. But I tried an aftermarket mag (from a caravan) on my mate's 2017 MUX and the hub was much thicker and required longer studs for it to be in any way safe on the MUX
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Follow Up By: RMD - Monday, Oct 15, 2018 at 17:11

Monday, Oct 15, 2018 at 17:11
Phil
Doesn’t that mean the caravan wheel is incorrect and not the Dmax?

Wheels don’t have a hub, the wheel fits onto a hub. Do you mean the wheel centre section is thicker? It seems that is what you are alluding to.

Scrubby
They are all 6 stud and with that I mind, the PCD and stud pattern are one and the same thing.
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Reply By: Member - DOZER - Monday, Oct 15, 2018 at 11:38

Monday, Oct 15, 2018 at 11:38
Id be more concerned with the calliper clearance. most 16 inch rimmed cars have 16's because the brakes bind on 15's. Not to mention the legalities with running a size not on the tyre placard.....dont have an accident, insurance will not pay
b4 you bag me out, walk a mile in my shoes, then your a mile away and have my shoes :)

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Follow Up By: IvanTheTerrible - Monday, Oct 15, 2018 at 18:57

Monday, Oct 15, 2018 at 18:57
Dmax has an option of 15inch rim

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Follow Up By: Member - DOZER - Thursday, Oct 18, 2018 at 09:18

Thursday, Oct 18, 2018 at 09:18
didnt know that, thanks for enlightening me. Offset should be the only issue then....
b4 you bag me out, walk a mile in my shoes, then your a mile away and have my shoes :)

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Follow Up By: Ron N - Sunday, Oct 21, 2018 at 11:05

Sunday, Oct 21, 2018 at 11:05
I think you'll find the 2WD D-Max which uses 15" wheels, has smaller diameter brake rotors than the 4WD D-Max with 16" wheels.

The 4WD D-Max rotors are 319mm in diameter, the 2WD D-Max rotors are 256mm in diameter, and the early Landcruiser rotors are 302mm in diameter.

Most wheels rims run close to the calipers at the best of times.

Cheers, Ron.
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Reply By: Member - Scrubby (VIC) - Monday, Oct 15, 2018 at 22:39

Monday, Oct 15, 2018 at 22:39
Thanks everybody for the info,
Just to add some further info, my Darling old 1985 turbo-ed HJ60 has developed noisy gearbox bearings after having done only 420000 + klm .It has only ever had 15"x7" wheels fitted from new.( fitted by the dealership prior to taking delivery)
I have always started any outback or off-road trips with new tyres and wheels thus the number of partially worn sets i have hanging around.
Because I have now bought a D-max with 16" wheels I am looking at the possibility
of fitting the 15" ex - 60 series wheels and tyres.

Thanks again,
Scrubby.
I don`t know where i`m going but i`m enjoying the journey.

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Follow Up By: IvanTheTerrible - Tuesday, Oct 16, 2018 at 18:59

Tuesday, Oct 16, 2018 at 18:59
Go to the wreckers and buy a set of DMax 15X7 rims. Then put your tyres on. Perfect fit. Probably find a set of 15X7 steels that somebody has swapped for 16 alloys on facebook or ebay
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Follow Up By: Nomadic Navara - Wednesday, Oct 17, 2018 at 08:36

Wednesday, Oct 17, 2018 at 08:36
How many of those tyres are over 7 years old?
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Follow Up By: Member - Scrubby (VIC) - Wednesday, Oct 17, 2018 at 16:46

Wednesday, Oct 17, 2018 at 16:46
I am not sure Peter, maybe eight or less, why do you ask?

Scrubby.
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Follow Up By: Nomadic Navara - Wednesday, Oct 17, 2018 at 17:26

Wednesday, Oct 17, 2018 at 17:26
Just pointing out that with the number of tyres you have stored some may be time expired.
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Follow Up By: Member - Scrubby (VIC) - Wednesday, Oct 17, 2018 at 20:32

Wednesday, Oct 17, 2018 at 20:32
Thanks Peter,
I will try and find a date of manufacture on the tyres tomorrow.
I have owned vehicles for 57 years and never in that time have I known anyone to throw away a tyre solely due to it`s age or because it is more than 5, 10, or more years old.
Is there any law or regulation stating a maximum age for a tyre?

Scrubby.

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Follow Up By: Nomadic Navara - Wednesday, Oct 17, 2018 at 22:27

Wednesday, Oct 17, 2018 at 22:27
Scrubby, in the last 30 years the compound in vehicle tyres has changed. Way back our tyres lasted for years if not used much. In the last 30 years tyre compounds have changed. Some of the volatile compounds leach out over time and the tyres harden a bit and become dangerous. Have a read of these links:

Nothing Lasts Forever... and Tires Are No Exception

Tire life: Tread carefully beyond five years

Dangers of aged tires - scrol down a little.
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