Maximum width a tyre can protrude.

Submitted: Tuesday, Apr 28, 2009 at 21:11
ThreadID: 68332 Views:16152 Replies:5 FollowUps:25
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Hi Guys,

So i went out a got some 35" tyres fited to my FJ73. LOVING the tyres, i got Maxxis Mudzillas, amazingly capable tyre!

So they seemed fine until i actually took her out. I noticed when the vehicle began to articulate there was scrubbing occuring.

So ive decided that ill need to get offset rims. The tyres already sit about about 25mm out of the wheel arches on both sides. Im thinking of getting a 2" offset just to allow enough roof for everything to move around etc. So by the time i get the 2" offset rims fitted the tyres will protrude about 75mm.... I know.. its HEAPS! i have purchased some 'flexy flares' for the wheel arches which are the 65mm size.

So my question is how far can a tyre stick out from the body of the vehicle? i think i had heard nothing can stick our further than the side mirrors. But not sure.

Im in VIC btw..

Thanks guys

Has anyone else come accross these problems??

Thanks

JB
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Reply By: Brian B (Brisbane) - Tuesday, Apr 28, 2009 at 21:22

Tuesday, Apr 28, 2009 at 21:22
Hi JB,

I stand to be corrected here but I think you will find the tyres are not supposed to protrude past the outside of the guards nor are they supposed to contact the body of the car under normal operations.

There are probably a lot of other folk here who know more about this than I do but I believe it is the case.

Hope it all works out for you.
AnswerID: 362135

Follow Up By: beccsptyltd - Tuesday, Apr 28, 2009 at 21:27

Tuesday, Apr 28, 2009 at 21:27
hey brian,

thanks for your quick reply.. Of the 3 4x4 ive had now they have all had tyres that protrude past the body, not by much mind you about 10mm-15mm.. Both of which had 32" tyres on it.

But hey i dunno, thats why im asking the question to people.

Sure i agree it would be great if they didnt protrude past the guards but when you get into big tyres its just no possible to prevent. The tyres themself are 14.5" wide!!

Thanks Brian!
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FollowupID: 629892

Follow Up By: Dunco (NSW) - Tuesday, Apr 28, 2009 at 23:05

Tuesday, Apr 28, 2009 at 23:05
Get a wider car :-)

The tyres cannot protrude past the wheel arch.

You probably won't get pinched for it unless you get a Police Officer pull you over and he decides to check the vehicle out...sometimes police do have enforcements for unroadworthy vehicles.

Also, if you had a prang, your insurance assessor may just refuse to pay !!!

That would be the bit that hurts !!!




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FollowupID: 629923

Reply By: Ozhumvee - Tuesday, Apr 28, 2009 at 21:29

Tuesday, Apr 28, 2009 at 21:29
You are also not allowed to widen the track either which fitting offset rims would do. I can't remember the exact specs but there is an allowance but it isn't much.
Fitting wheels and tyres that don't match the tyre placard are also illegal.
Peter
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AnswerID: 362138

Follow Up By: beccsptyltd - Tuesday, Apr 28, 2009 at 21:32

Tuesday, Apr 28, 2009 at 21:32
Yeah ok fair enough.

When all of what you say is the case why are these kind of tyres available to purchase of the self?

I purchased these tyres from Bob Jane and they assured me they would be fine!

What do other people do? Just not have big tyres?
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FollowupID: 629895

Follow Up By: beccsptyltd - Tuesday, Apr 28, 2009 at 21:54

Tuesday, Apr 28, 2009 at 21:54
What does widening the track actually effect? Why would they actually restrict this?
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FollowupID: 629901

Follow Up By: Ozhumvee - Tuesday, Apr 28, 2009 at 22:09

Tuesday, Apr 28, 2009 at 22:09
Widening the track increases the load on suspension, bearings, hubs etc which may cause component failure.
Larger wheels and tyres also increase loadings on axle and suspension, drivetrain, decrease braking efficiency, alter gearing etc etc.
Peter
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Follow Up By: Horacehighroller - Tuesday, Apr 28, 2009 at 22:10

Tuesday, Apr 28, 2009 at 22:10
Increasing wheel offset puts extra load on the bearings, axles, wheel nuts etc.

In Vic you are only allowed to increase the track on a rigid axle by 50mm.(i.e Move the centre of each tyre out 25mm)

Your big problem is in relation to the tyre placard as indicated above.

Peter
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FollowupID: 629910

Follow Up By: beccsptyltd - Tuesday, Apr 28, 2009 at 22:13

Tuesday, Apr 28, 2009 at 22:13
Ok great, 1" should be enough, its just not plenty. I just didnt want to get 1" offset only to figure out that it doesnt give me enough clearance to stop scrubbing etc.

Thanks very much Horacehighroller!
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FollowupID: 629912

Follow Up By: Ozhumvee - Tuesday, Apr 28, 2009 at 22:26

Tuesday, Apr 28, 2009 at 22:26
Measure the current track (centre of the wheel to centre of the wheel on opposite side) and compare that measurement to what the vehicle track was when it left the facctory.
You can only increase the original track by 50mm, I'd hazard a guess that as you have already fitted wider rims that you have already increased the track to the allowable 50mm if not past it.
Peter
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Follow Up By: beccsptyltd - Tuesday, Apr 28, 2009 at 22:29

Tuesday, Apr 28, 2009 at 22:29
i dont believe the rims are wider than normal. they are a 7" rim.

How do i find out what the original (factory) track is?
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FollowupID: 629918

Follow Up By: Rossc0 - Tuesday, Apr 28, 2009 at 23:11

Tuesday, Apr 28, 2009 at 23:11
If your running 7" rims then I doubt the tyres are 14.5" wide, what does the tyre specification show eg 35x14.5R16

The maximum width tyre you should run on a 7" rim is 10.5" anything bigger is flirting with danger especially off road.

Have a look on the BF Goodrich site for tyre sizes for rim maximum, minimum and optimal sizes.

If they are 14.5" I estimate that you should probably have 10" minimum width rims.

Tyres can not protude outside the guards when travelling straight ahead, however you can put flexible guard extensions on upto 50mm.

Cheers
Ross
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FollowupID: 629925

Follow Up By: beccsptyltd - Tuesday, Apr 28, 2009 at 23:18

Tuesday, Apr 28, 2009 at 23:18
Hi mate,

the rims on it are sunrasias.. they are 16" rims. They say 7JJ16 on then.

The tyres say 35"x14.5"R16.

With your last comment of the flexy flares (flexible guards) are you saying that if you fit them your tyres are able to protrude futher than the wheel arch and upto the new flexible guard?

Cheers
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FollowupID: 629926

Follow Up By: Shaker - Tuesday, Apr 28, 2009 at 23:28

Tuesday, Apr 28, 2009 at 23:28
Bob Jane Tyre Service has a lot to answer for, they have a duty of care not to fit illegal tyres.
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FollowupID: 629927

Follow Up By: beccsptyltd - Tuesday, Apr 28, 2009 at 23:33

Tuesday, Apr 28, 2009 at 23:33
shaker so would you recommend going back and complaining?

The main reason they talked me into getting the 35" tyres was because they offered me a very good price on them.... $200 each. If i go back and complain then they will stick me with smaller more expensive tyres!
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FollowupID: 629928

Follow Up By: Rossc0 - Tuesday, Apr 28, 2009 at 23:35

Tuesday, Apr 28, 2009 at 23:35
Ok then the tyres are too wide for the rims and you will find they very easy to roll off the rim. Rim width is 7"

Yes and 50mm is the widest extension your allowed, from memory the 65mm flexiflare only protrudes by 50mm as the other 15mm is where it attaches to the guard.

As to these tyres being readily available that's the case with all things automotive, it does not mean they will work or are legal.

Insurance is your biggest problem as any claim will be rejected if the tyres/rims do not match with placarded sizes.

35's are nice on a comp truck but for every day use are a pain. Most people should not need bigger than 33's and you would find they are unlikely to scrape on anything.

You will probably find it's the width also that's causing the scraping not the diameter.

Cheers
Ross
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FollowupID: 629929

Follow Up By: Shaker - Tuesday, Apr 28, 2009 at 23:38

Tuesday, Apr 28, 2009 at 23:38
Yes I would, they have made your vehicle unroadworthy & probably uninsurable.
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FollowupID: 629930

Follow Up By: beccsptyltd - Tuesday, Apr 28, 2009 at 23:39

Tuesday, Apr 28, 2009 at 23:39
Yeah thats right, it is the width that seems to be the problem. The main problem i have is that i need to get a RWC for the car as i have just purchased it and it needed new tyres as they were bald, so im really in a tight spot now. But as the car sits now the tyres only protrude 10-15mm from the car so im thinking of fitting the 65mm flexiflares and then trying to get the rwc. Then changing the offset on the rims.

Does anyone know a good place to go in Melbourne for roadworthies?
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FollowupID: 629931

Follow Up By: Rossc0 - Tuesday, Apr 28, 2009 at 23:45

Tuesday, Apr 28, 2009 at 23:45
That's why they were only $200 as they are incorrectly fitted for the size of the rim, scrape on the vehicle chassis/body and considering you are now contemplating buying new rims are not such a bargain.

I'd guess they were ordered for someone else and they paid a deposit but never collected or found they did not fit.

I paid $260 each for BFG AT's about 12months ago (I did buy six in one go so was a slight discount for bulk), these are 33x10.5R15LT and fitted to 15x8 rims. No scraping, no rubbing, are a placard size tyre and do protrud from the guard by 20mm but not due to change in offset only the increased width of the tyre. 65mm flexiflares on the front solved that, tray covered them on the back.

If you can't get some where on these then you should not be there in the first place.

Agree with shaker's comment about Bob Jane's I would never buy anything from there.

Cheers
Ross
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FollowupID: 629932

Follow Up By: Rossc0 - Tuesday, Apr 28, 2009 at 23:48

Tuesday, Apr 28, 2009 at 23:48
If the roadworthy place you take it to is doing their job correctly I doubt it will pass given the tyre width to rim size.

You would have been better off finding some cheap 31x7.5R16's to get it through roadworthy then putting the new tyres on later.

Cheers
Ross
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FollowupID: 629933

Follow Up By: Shaker - Tuesday, Apr 28, 2009 at 23:49

Tuesday, Apr 28, 2009 at 23:49
My comment wasn't intended to denigrate Bob Jane Tyre Service in general, just the branch that allowed the tyres to be fitted.

I wanted to fit some very slightly larger tyres a while ago & Tyrepower refused, as they were not listed on the vehicles Tyre Placard.

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FollowupID: 629934

Follow Up By: DIO - Wednesday, Apr 29, 2009 at 10:11

Wednesday, Apr 29, 2009 at 10:11
Why blame Bob Jane. It's not against the law for them to sell tyres but is is against the law for you to fit oversize that protrude outside mudguards. The tyres are for off-road use only NOT general road use. Same applies to tyres rubbing on bodywork - ILLEGAL. Vehicles have a tyre placard that specifies the sizes, speed, capacity that can be fitted to vehicles.
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FollowupID: 629972

Follow Up By: Ozhumvee - Wednesday, Apr 29, 2009 at 11:20

Wednesday, Apr 29, 2009 at 11:20
Dio, actually Bob Jane are liable as they sold the tyres and fitted them to the vehicle where they obviously were illegal as they were outside the vehicle mudguards/body.
They were obviously too wide for the rims.
They were also not in compliance with the tyre placard.
If he had fronted up with the rims in a trailer and them fit the tyres to the rims then they may have an out but fitting them to the vehicle they are liable. Unless of course they gave him a receipt stating they were for off road use only and they were fitted at the customers risk.
Any honest and reliable tyre place will not fit tyres that are illegal, neither will they repair them if they could be held liable.
Peter
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FollowupID: 629989

Follow Up By: beccsptyltd - Wednesday, Apr 29, 2009 at 17:07

Wednesday, Apr 29, 2009 at 17:07
No where on the tyres do they say 'NOT for road use' or anything of the sort...

People please be aware here that i did not post my question to figure out who to point the finger at, rather to figure out what i can do about the situation that i am in...
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FollowupID: 630035

Reply By: Axel [ the real one ] - Wednesday, Apr 29, 2009 at 12:24

Wednesday, Apr 29, 2009 at 12:24
Got vehicle insurance ???? You have got none any more ! Even your 3rd party will technicaly become void as the vehicle is now legally unroadworthy ,, Never mind that you can legally buy the tires and that a tire chain fitted them ,, Legally the onus is on YOU to have your vehicle in an ADR compliant and roadworthy condition after any modification post factory.
AnswerID: 362237

Follow Up By: beccsptyltd - Wednesday, Apr 29, 2009 at 17:10

Wednesday, Apr 29, 2009 at 17:10
I just contacted my insurance company. Since the car is insurance though my business the insurance company said there is no reason why they wouldnt insure me. I specified the tyres i had fited they asked if the vehicle track had been altered by more than 50mm to which i said no (at this point in time is hasnt been altered). They asked if the tyres stuck out from the car at all, to which i was honest and said they stuck out 10-15mm but the vehicle has flared guards to which the tyres to no stick out past those.

All in good insurance whys.
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FollowupID: 630037

Follow Up By: Axel [ the real one ] - Wednesday, Apr 29, 2009 at 17:18

Wednesday, Apr 29, 2009 at 17:18
Hope you got that in writing ,cause if you havent ,,,,,,,,,,,,
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FollowupID: 630042

Follow Up By: beccsptyltd - Wednesday, Apr 29, 2009 at 17:37

Wednesday, Apr 29, 2009 at 17:37
She said they send out a vehicle statement, with all the vehicle accesories etc etc etc.
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FollowupID: 630048

Reply By: RobAck - Wednesday, Apr 29, 2009 at 18:56

Wednesday, Apr 29, 2009 at 18:56
The very simple answer is that no tyre is allowed to protrude beyond the bodywork. This is the standard nationally unless some body has changed their mind again.

So you go and purchase a set of wheel flares and the problem is solved. Well in the first instance

I also suggest you see how far out of placard size your new rubber is as there are also requirements around that as well. Your local registration organisation and your insurance company will have a very firm view on it

Regards

RobA
AnswerID: 362310

Reply By: Mrbrush - Wednesday, Apr 29, 2009 at 20:49

Wednesday, Apr 29, 2009 at 20:49
do you have a spring lift ? that would help stop any tyre rub.
AnswerID: 362336

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