Tyre sizes for 100 series

Submitted: Sunday, Jan 06, 2013 at 18:36
ThreadID: 99835 Views:12989 Replies:4 FollowUps:8
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Does anyone know if you can fit 285 x 33 inch tyres on a standard 100 series Landcruiser with IFS without doing a suspension lift?
Keith
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Reply By: Member - Judy and Laurie - Sunday, Jan 06, 2013 at 19:57

Sunday, Jan 06, 2013 at 19:57
hi Keith, what is the tyre size on the tyre and what is your rim size .
AnswerID: 501869

Follow Up By: Member - Keith Berg - Sunday, Jan 06, 2013 at 20:40

Sunday, Jan 06, 2013 at 20:40
Hi Laurie,
I am wondering about Cooper SST Max. I have standard 8 inch x 16 inch Landcruiser mag wheels.
The tyre size is 285.75/R16
Stated suitable rim size is 7.5-9 inches
Outside diameter is 840 mm compared with about 813 for the original tyres.
They are ten ply with a 126Q rating and I am thinking of fitting them to both vehicle and heavy off road trailer.
Just wondering if they would foul the bodywork. I hear 285s are OK but am wondering about the extra inch in diameter.
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Follow Up By: The Bantam - Monday, Jan 07, 2013 at 00:36

Monday, Jan 07, 2013 at 00:36
I notice you have some dimensions in mm.

Do ya self a favour....stop talking about widths and diemeters in inches.

the regs are all in mm and even the tyres designated in inches are not that size...31s arent 31 inches..that are 30 1/2 even on traction tread.

I doubt that you will have problems with the extra 25mm.....others may conform or deny......but you would be wise to reset your steering stops.

Ask ya self whay you need bigger tyres and think how much advantage it is going to give you.

Realy 25mm extra diameter....12.5mm extra height in theory.....then they get weight on them and you air them down off road....so what are ya going to achieve..an extra 8 or 10mm tops off road...is it realy worth it.

cheers
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FollowupID: 778143

Follow Up By: Member - PJR (NSW) - Monday, Jan 07, 2013 at 09:55

Monday, Jan 07, 2013 at 09:55
Hi Keith

Read my post below.

Phil
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Reply By: Jeff P - Sunday, Jan 06, 2013 at 22:45

Sunday, Jan 06, 2013 at 22:45
Hi my first 100 series turbo I fitted 285R75/16 tyres and regretted it, made fuel economy worst and the steering worst ,looked good !and i think you will find they are illegal to fit, 15mm rule, I have the new cooper ST maxx on my silverado 285R75/17 they are noisey , appear to be one tough tyre but the jurry is out until I make them work then I will comment as Iam not a fan of coopers tyres and will give them the benefit of the doubt for now as they ticked all the boxes for the tyre I was looking for except for the noise!!
Jeff
AnswerID: 501878

Follow Up By: The Bantam - Monday, Jan 07, 2013 at 00:27

Monday, Jan 07, 2013 at 00:27
Mate most states ( including QLD) that used to run the 15mm rule have now signed up to VSB14 and now permit a 50mm diameter increase and a 50mm suspension lift without inspection or engineering.

cheers
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FollowupID: 778142

Follow Up By: baz&pud (tassie) - Monday, Jan 07, 2013 at 09:17

Monday, Jan 07, 2013 at 09:17
We have a V8 100 series fitted with 285/75/16 BGFs and they are fine.
Used to have pro com 305/75/16.
Baz
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Follow Up By: Jeff P - Monday, Jan 07, 2013 at 10:44

Monday, Jan 07, 2013 at 10:44
Thanks Bantam you are right about the new rule I checked it out this is good news for 4WD owners !
Jeff
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FollowupID: 778187

Reply By: Member - PJR (NSW) - Monday, Jan 07, 2013 at 09:53

Monday, Jan 07, 2013 at 09:53
2005 GLX 100 4.2td. Front torsion bars wound up to highest safe height. Maybe about a 1" rise - not measured. The 285/75/16 Cooper ST Maxxs fit nicely. Haven't noticed any great increase in fuel consumption other than what would be expected with a larger diameter tyre. Steering is fine. The power steering overcomes any shortfall with ease.

If you are local in Canberra you can try mine. I have two complete sets of rims with tyres.

Phil
AnswerID: 501894

Follow Up By: chisel - Monday, Jan 07, 2013 at 13:58

Monday, Jan 07, 2013 at 13:58
33s fit ok. Check lcool for more detail.
I have an IFS 100 with stock suspension and running 285/70R17 (same size as a 285/75R16) with no problems. The 285/75R16 is a very common size.
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FollowupID: 778214

Reply By: Member - Keith Berg - Monday, Jan 07, 2013 at 15:30

Monday, Jan 07, 2013 at 15:30
Thanks everyone for the advice. I do appreciate it. Might steer clear of the muddies and go for the AT's.
Keith
AnswerID: 501922

Follow Up By: Member - Leigh (Vic) - Monday, Jan 07, 2013 at 19:45

Monday, Jan 07, 2013 at 19:45
I run Coopers and next choice will probably be BFG A/T in that size. The Coopers I currently have fitted developed radial cracks in the sidewall after very few rotations. The previous set failed to maintain interest in keeping its lugs on. Now just too time poor to chase them up on warranty and all the challenge that goes with it. That's my two bob's worth!!
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