The reason behind big tyres

[DamTriton]

One more serious answer. Larger tyres usually can be run at lower pressures in sand and mud aiding "floatation" - the ability of the vehicle to sit on top of a soft surface without breaking the "surface tension". This is due to the lower pounds per square inch of the vehicle mass on the tyres surface, exerted on the surface of the sand/mud.

[coxy321]

see i knew this would be a numbty question. but it was one that i hadnt been able to answer myself yet and jusitfy.

I knew that bigger tyres would give you 1" lift for every two you go up in size. But it just seems like alot of effort. I'm not really hacking on those that have the bigger tyres (maybe i'm just jealous that i've got standard)

It seems like alot of effort to go to.

The only "effort" involved in fitting bigger tyres is:
- Having to work to earn the money to buy them
- Having to jack the car up and swap your daily driving wheels with your play wheels.

You dont have to get lifted this, raised that, adjustable everythings - as previously said, most standard 4x4's have enough clearance for a decent tyre size upgrade with no mods.

I leave the road as often as i can man. My car just has standard tyres and a 2" lift that was on it when i brought it. I dont do hardcore with it yet, coz i dont have the experience. nor the tools to get out if i end up in shit.

Nothing wrong with having a stock car mate - we've all been there before. Its the equivalent of a blank canvas for a painter.... And we ALL understand time allowances for going wheeling too.

The thing that threw me is that you go and get a 2" body lift, then you get 4" bigger tyres, yourve reduced your inner gaurd cleanance back to standard, so then you need the 2" suspension lift just to get more clearance. but then your tyres will still rub when you turn a corner, and when you flex it up.

Wrong. As said earlier - you dont need 12 inches of lift to fit bigger tyres.
Eg., i used to own an MK ute (there was pics on here...i'll post one up tonight), it essentially had NO lift, just trimmed front guards, and i used to run 37x13.5R15 radial Baja Claws on it no problems.

Do yourself a favour and search for info on setting up bumpstops correctly - very important.

this tool is kidding right?????????????

I maybe a tool man. but i tired to work it out myself and couldnt completly understand it, so are you trying to be is the bigger man and say yourve never asked a question before.

I think he (and many others) were a bit dumbfounded at your original question, as the answer is pretty obvious (or so it would seem).

Peace out.

[bogged]

i think by "a lot of effort" he means "a lot of money"....

HUGE difference in lot of effort and lot of bux.

[GRPABT1]

I think you are just a few fourbying trips away from finding out the answer to your own question mate. Seriously you just spoke too soon.

[DIRTY ROCK STAR]

I think you are just a few fourbying trips away from finding out the answer to your own question mate. Seriously you just spoke too soon.

this is true.

and until you see someone on bigger rubber drive up something large it wont hit home.

[taps]

I think you are just a few fourbying trips away from finding out the answer to your own question mate. Seriously you just spoke too soon.

this is true.

and until you see someone on bigger rubber drive up something large it wont hit home.

And you wont get to experience wheel shimmy until then either !!!!!!

[GRIMACE]

i always like the big tyres and lift under the rangie. Made it easy to work on and more then enough room to sleep under the car when out bush.

[coxy321]

I think you are just a few fourbying trips away from finding out the answer to your own question mate. Seriously you just spoke too soon.

this is true.

and until you see someone on bigger rubber drive up something large it wont hit home.

And you wont get to experience wheel shimmy until then either !!!!!!

Completely off topic, but i always got shimmy worse with smaller tyres. I think it was something to to with more inertia/weight trying to keep the rotation true.

[taps]

The bigger and the crankier the tyre, the less chance off balance, the bigger chance of shimmy

[Hekta]

Body lift,
Suspension lift,
Gaurd trim,
Wheel spacers,

Why go to this much effort?

It's a common misconception for newbies to think all that is necessary, not only for fitting bigger rubber, but for a 4WD in general. Stick around here for a while and you'll realise that isn't the case.

[dirtyGQ]

i only run 38's because they look better than 37's .

[midi73]

I knew that bigger tyres would give you 1" lift for every two you go up in size. But it just seems like alot of effort.

if bolting on 4 shocks, 4 springs and 4 bigger tires is 'a lot of effort' you maybe in the wrong hobby.

I couldnt have said it better myself. Although like others have said, I dont think the bug has bitten properly yet.
You dont have to go out there with the biggest is best attitude. just upsize according to your experiance, bank balance and how much you want to mod your car.

[bogged]

Body lift,
Suspension lift,
Gaurd trim,
Wheel spacers,

Why go to this much effort?

It's a common misconception for newbies to think all that is necessary, not only for fitting bigger rubber, but for a 4WD in general. Stick around here for a while and you'll realise that isn't the case.

Very well put.... probably something everyoen has missed in this thread..

Its like everyone has to have lockers, swampers, and 30,000 of ARB/whoever gear on their truck to even go near dirt.

Go learn what your stock truck can do you maybe suprised, and it will make you a better wheeler oversomeone who goes out and buys the works from day 1 who will be fawkt if any of them break.

[GRIMACE]

Go learn what your stock truck can do.

break diff centres, axles, cvs, and blow auto clutch packs... Maybe my driving style (or lack of) has something to do with that

[bogged]

Go learn what your stock truck can do.

break diff centres, axles, cvs, and blow auto clutch packs... Maybe my driving style (or lack of) has something to do with that

na we are talkin Nissans, not Rangies, Yotas, Kias etc..

[GRIMACE]

Go learn what your stock truck can do.

break diff centres, axles, cvs, and blow auto clutch packs... Maybe my driving style (or lack of) has something to do with that

na we are talkin Nissans, not Rangies, Yotas, Kias etc..

ow sorry i didnt realise this was the softcore tourin section. I like goats!

[Zaphod]

Bah......big tyres.....these are big tyres

http://au.youtube.com/watch?v=2KfFQ-jauxw

[nellyb1]

so this is what i thought you guys were on about.

Just jokin

http://au.youtube.com/watch?v=F_VImPZTI ... re=related

[the gun]

I fitted bigger tyres in an effort to make my fourby float when fording deep water crossings

[zagan]

Ride a BMX bike across a rough track, then ride a fully rigid mountain bike. Which one rolls over obstacles more easily, and has better traction when climbing???

Whether it is worth it or not is another matter. Std size tyres, underbody protection and a good quality winch will still get you to most of the same places.

On a bicycle?

ill have to make a alloy winch cradle for my mountain bike to save weight.. but where does the battery go?

remember to use rivets to hold it together

being such a light vehicle, i think rivets would be overkill... gaffa tape maybe? and paul should be able to fab up a mount outa cardboard for ya...

You'll want the highest non-tearage rating duck tape not just any old duct tape too.

[Slunnie]

On a bicycle?

ill have to make a alloy winch cradle for my mountain bike to save weight.. but where does the battery go?

remember to use rivets to hold it together

being such a light vehicle, i think rivets would be overkill... gaffa tape maybe? and paul should be able to fab up a mount outa cardboard for ya...

You'll want the highest non-tearage rating duck tape not just any old duct tape too.

Absolutely. 3M 200MPH duct tape is the only way to go - much stronger than gaffa. I install Xmembers with this stuff.

http://solutions.3m.com/wps/portal/3M/e ... gproducts/

[Bluefreak]

Go learn what your stock truck can do you maybe suprised, and it will make you a better wheeler oversomeone who goes out and buys the works from day 1 who will be fawkt if any of them break.

What Bogged said...

ML Triton, no lift, 32's, have since lifted the side steps 40mm (would rather lose them but the kids need them to get in) - this has gotten me places others said I couldn't go and like my last triton, wiped a smug smirk of the face of many a conceited twat...

Start small, learn both your and your trucks limits then spend the coin as your ability exceeds the capability of your truck...

OT: I fitted 32's because that's the biggest that will fit without mods and I gain the clearance and floatation others have mentioned... It's only an inch and a half of lift, it seems inconsequential but 5mm is important if it gets you over the obstacle...

[coxy321]

Nelly - just a quick FYI. Here's one of my old cars, completely "stock" spring height, just 2" bodylift (which is a $150 cost) running 37x13.5R15 Claws.



And making use of the extended bumpstops (needed longer shocks though).



Note: Lockers are fantastic, and you dont need an 8" Mega-Lift to run your big play tyres.

[berad]

You just put that there for a business plug haha.

[coxy321]

[chimpboy]

Bigger tyres roll over obstacles more easily.

Picture a pool table; you roll a billiard ball into the barrier and it bounces off. Roll a basketball along the same table and it will go over the barrier.

The reason is that the larger diameter ball (or tyre) will actually have its frontmost point PAST the obstacle before it even hits it. The obstacle hits the tyre/ball UNDER and BEHIND the frontmost point.

This means that when the tyre tries to move forward, it has a built-in tendency to CLIMB, rather than to bounce back.

It sounds weird in theory but in practice you can see it all the time.

You should be able to see in the picture below that if you pushed each of the balls/tyres forward purely horizontally, the larger one will climb while the smaller one will not.



The other bit reason imho is diff clearance. Plus big tyres look better.

But make no mistake, there is a significant off-road performance gain from bigger tyres.

[MightyMouse]

Lets just aasume that what he says is true - he doesn't get off road much and perhaps hasn't pushed his rig over the sort of terain that others have.

Under those circumstances he might not appreciate the advantages of tire diameter and think its all about looks - especially when it s not a cheap option in many cases - and for some tyre size is more about bragging rights....... than capability.

having said that - IMO larger diameter tires add significantly to the vehicles capability for all the reasons given, and the more difficult the terain the more you will appreciate them.

[Jeeps]

If it hasn't been said yet, bigger tyres also make your penis appear larger, that's why my tyres are bigger than stock I need to fool the ladies and goats

[v840]

If it hasn't been said yet, bigger tyres also make your Pencil appear larger, that's why my tyres are bigger than stock I need to fool the ladies and goats

I'm amazed anyone even bothered mentioning any other reasons.

[danssurf82]

the bigger the tyres the better do u understand?
but the cops just dont like it!!! i got defected on monday(australia day) at stockton beach i only had 31's!!! (on a vitara) i think he was jelous that my aproach angle would allow me to drive up on the bonnet of his SS commodore. i told him that defecting 4x4's on Australia day was not very Australian.-he was not happy
oh well defect clear now i am going to put 35's on it-more guard chopping yay i love grinders