More on tyres and wheels for 80 series

Submitted: Monday, Jul 21, 2003 at 22:18
ThreadID: 6102 Views:2028 Replies:3 FollowUps:4
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What is the maximum tyre height and width stated on the tyre placard of the 80 series that came with the 16 x 8 wheels? I moved from the old 15 x 7 chromes on the pre 93 gxl and was wondering what the biggest I could go to in the future with the new 16 x 8's that I got. Taking into account the 15mm increase in height and width allowable up here in Qld to stay roadworthy.
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Reply By: Wazza (Vic) - Tuesday, Jul 22, 2003 at 10:48

Tuesday, Jul 22, 2003 at 10:48
I just took some pics of mine. It is a 1993 GXL with factory 16x8 rims. Hope they help get you at least part way to an answer.

http://www.geocities.com/cruiserpics/tyre_placard/

Now I have a question!

In the picture of the second tyre placard, you can see the recommended tyre size has been scribbled on by someone. It says 275/70R16S114H. The 'S' definately looks like it has been hand written. Does anyone else have this on their's ??Cheers,
Wazza
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AnswerID: 25577

Follow Up By: Wazza (Vic) - Tuesday, Jul 22, 2003 at 10:56

Tuesday, Jul 22, 2003 at 10:56
And looking further, why does one placard state:

A speed category symbol of not less than "H"

and the sticker below it:

The tyres fitted to this vehicle shall have a speed category not less than "N" (140km/h).

What the ??????Cheers,
Wazza
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FollowupID: 17339

Follow Up By: charlie - Wednesday, Jul 23, 2003 at 15:49

Wednesday, Jul 23, 2003 at 15:49
Thanks for posting the placard it was very useful. This means that the total height/diameter reccommeded by toyota is 800 mm. I have 305/70's on 16's and they are 827mm 2.7 cm too tall therefore mine are illegal in Qld. I wonder if I will now need an engineers certificate does anyone know?

By the way 285/75's come to 827.5mm so are also illegal in Qld.

My tyre dealer said nothing about my tyres being illegal on Qld roads I find that very interesting.

Charlie
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FollowupID: 17432

Reply By: Member - DOZER- Tuesday, Jul 22, 2003 at 13:09

Tuesday, Jul 22, 2003 at 13:09
Hi Guys
Most later cruisers have dual placards which mean you can run the cheese slice n rated tyres or the h or s rated highway tyres. If yours doesnt have both, go to toyota and buy the other.
If 15mm is all you can go, then the 285 is supposedly 10mm bigger than 275 in width. these are a 33 inch tyre as opposed to a 32 inch 275, so it depends whether the rule applies to diameter or radius of tyre. You can buy as far as a 315x75x16 to fit the 16x8, which is a 35 inch tyre roughly.
I have 285x75x16 Bridgestone M/T that have an excellent load range-(1500kg) thats why i got them over the BFG 285.
Andrew wheredayathinkwer mike?
AnswerID: 25601

Follow Up By: Wazza (Vic) - Tuesday, Jul 22, 2003 at 15:47

Tuesday, Jul 22, 2003 at 15:47
Thanks Andrew, clears up my query.Cheers,
Wazza
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Reply By: tristjo - Tuesday, Jul 22, 2003 at 23:36

Tuesday, Jul 22, 2003 at 23:36
Charlie,

Correct me if i'm wrong, but I thought the maximum increase in tyre diameter in Qld was 50mm over the size of the largest, factory fitted tyre for that specific vehicle.

Thats the impression I got when reading the Transport book, anyway. It might open up a few more options for you.

Tristjo.
AnswerID: 25653

Follow Up By: charlie - Wednesday, Jul 23, 2003 at 15:27

Wednesday, Jul 23, 2003 at 15:27
Tristjo the latest Queensland Transport modifications guide (that I picked up today) states that the overall diameter of the tyre must not vary by more than +15mm or -26mm than the largest on the tyre placard (or that the manufacturer recomends). More interestingly it states that for the width of the tyre it cannot be more than 1.3 times the max width on the placard for passenger cars and 1.5 times on off road passenger vehicles with front and rear beam axles (provided that they stay within the bodywork/flares). That means for an 80 series with a max of 275 you could put 401 tyres on. That sounds pretty extreme to me pitty no one makes them that wide with the smaller diameter.

Charlie
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