One wheel bigger than the other..

[Crapozo]

Hello,
Alright if you have on your car,

The back wheel bigger than the front or vise versa
Would there be a speed or handling difference when you drive the car?
Or do some people just do that for show?

[kempster1]

Depends if you have the pedal to the metal

[gtfpv]

could be a female car.

[M14A-Mclaren]

Top fuel dragsters seem to handle it alright, lol.

[phat_stak_tipa]

what is going on here???????????????????????

[Crapozo]

So no different between both same size and both different? (because i like the look when the rears are larger than the fronts)

[TEaaron]

Having the front smaller than the back has it's advantages, the front heats up faster thus giving more front grip

[Crapozo]

ok so
Would having small wheels on a car provide more friction? than large ones?

[kempster1]

Originally Posted by Crapozo

ok so
Would having small wheels on a car provide more friction? than large ones?

Are you for real or just on good drugs???

[Crapozo]

i know nothin about cars, nothing :(

just trying to learn that's all

[vino3o2]

Originally Posted by kempster1

Depends if you have the pedal to the metal

:hihi: thats gold!!

[vino3o2]

Originally Posted by kempster1

Are you for real or just on good drugs???

kempster1... ya makn me laugh mate!!

[xbgs351]

Originally Posted by XDaaron

Having the front smaller than the back has it's advantages, the front heats up faster thus giving more front grip

They often do the opposite on circuit cars.

[TEaaron]

Originally Posted by xbgs351

They often do the opposite on circuit cars.

I've never heard about having a smaller back wheel in racing except with front wheel drives.

[Shonky]

Crapozo - On a road legal car there would be no noticeable benefit in having larger rear wheels/tyres than the fronts.

Also... it: A) looks silly, B) is possibly illegal (?) and C) plays havoc with tyres rotations... :P

[BPXR6T]

This post is bizarre, pick up a few streetmachine magazines or something...

Anyhow, I've seen people do it. Boyd Codingtons AU had 18's on front and 20's on back. Project VU-4-U or whatever it was called had 24inch on the back and 18's on the front. That was all engineered. In my opinion it looks like total crap...

I've known people running different profiles on the front and back which slightly effects the rolling diameter. But for no practical reason other than being dead broke.

[noosacuda]

I think the wider/bigger wheels on the back look much better and tougher than the same size 24", 350 x 15 profile "wagon wheels" front and rear.

[falcon91]

On my old falcon I had thinner wheels on the front (Otherwise you have to be Arnie to park the damn thing), But bigger! wheels on the rear as in 18"or 19" would make F%# all diff, except if you had a flat tyre, and had to put a standard one on one side, then you'd look like a right tosser! Even those space savers look ridiculous, and yes I've seen people driving on them for weeks! What is this thread supposed to prove anyway, it's your car. Do what you like! :

[*rayman*]

most american ubilds use a larger rear wheel size, to give the car a bit of a rake.... like 18's front, and 20's rear.... have a look on www.pro-touring.com or www.lateral-g.net at any stage and you will see what i mean.

[wulos]

Gee - some REAL opinionated comments turning up on here. He simply asked a question (no different to anyone else on here - cut the guy some slack & either answer nicely or keep ya mouthes shut)
Crapozo - There are a few different 'dynamincs' involved with wheels/tyres, that you should prob know about before answering the question.
To say 'bigger' do you mean wider? as in actual tread width, profile, as in amount of tyre visible from the rim, to the road, or do you mean rim sizing?
In general a wider tyre will provide an increased 'footprint' onto the road surface, that can, increase the grip levels at the rear (cars that suffer from power induced wheelspin may choose this route to help get more usable power to the ground)
A tyre with a lower profile (less sidewall height - rubber between the rim & the road) will generally provide a more direct connection to the road. This is usually done to help improve the hamdling of a car, but is at the expense of ride quality - the ride quality will on rough roads may become noticably harder(bumpier) With lower profile tyres the car may be a little more responsive in both acceleration and braking. This is due to the fact that the sidewalls of the tyre are deforming less.

[wulos]

Onto the rims then.
The rims fitted may be larger in width , or diameter, to allow fitment of lower profiles tyres without sacrificing rolling diameter. The rolling diameter of tyr/rim combo must remain within a certain limit to remain legal. Altering the rolling diameter will influence the speedo reading in same way that altering diff gearing ratios.
Another reason to go to a different rim could be to clear larger replacement brakes. Increased sized brakes combo may not fit inside the stocker original sized rims.
Of course the owners choice in tyre / rim combo may simply be aesthetic.
As you can see, there is a bit more to it. As with most other midifications, your tyre/rim choice may well compromise the handling (and in certain circumstances) the structural integrity of the car. If unsure tis best to check with those that know. (get engineering advice - certificate)

[TEaaron]

Originally Posted by Young 'un

Also... it: A) looks silly, B) is possibly illegal (?) and C) plays havoc with tyres rotations... :P

A) No it actually suits some of the older cars

B) I have diffrent sized tyres and it passed the road worthy

C) What do you mean it plays havoc? Mine drives fine.

[wulos]

Originally Posted by XDaaron

C) What do you mean it plays havoc? Mine drives fine.

Think he meant fitting the rears onto the front & fronts onto the rears

[OLDFORDNUT]

when you put much wider tyres on back the rear of car will try and push you straight in corners if going hard as there is much more tread on the rear causing the tyre to not want to change direction because of the friction created as front of car turns making the rears sort of drag across there tread pattern,fantastic if you are on a drag strip but a worry if going into a corner hard, you would probably never notice with tyres such as 225 wide on back and 195 on front but i can tell you from experience when you have 265 wide on back and 195 on front my XY used to be very hairy when going hard into a corner,

[T_Terror]

It will not affect your handling that dramatically, youll find a lot of supercars have larger diameter wheels at the rear than the front eg, Saleen S7, quite a few Euros

[Crapozo]

ok Thanks for all your replies
It has been a big help!

To clear things up alittle bit more i actually mean the diameter of the wheel (diameter of the rims?).

[xbgs351]

Originally Posted by XDaaron

I've never heard about having a smaller back wheel in racing except with front wheel drives.

Running larger diameter wheels (ie 17") up front allows a crisper turn in and running smaller diameter wheels (ie 16') at the rear allows the power to be put down better.

[MrSparkle]

Originally Posted by T_Terror

It will not affect your handling that dramatically, youll find a lot of supercars have larger diameter wheels at the rear than the front eg, Saleen S7, quite a few Euros

Minor difference being they are DESIGNED for that fact. Put a huge set of tyres on the back of a stocker, and the balance is shot - case in point, I drove an S15 with this arrangement and it understeered like a son-of-a-ИИИИИ.

[[Tonko]]

haha this reminds me of a funny story... a mate of mine "found" an 18' rim and tyre so he put it on to his EB (kind of conveniant that it fitted) and he also likes to do the odd burnout so he was driving around with a boot full of spares which he put the best of, on the car.. FR-14' FL-15' RR-14' RL-18' so yess he was a ИИИИen idiot.... that needed a new diff... was so random coz the 18' was a 6 spoker with a huge crack through one of the spokes....