Would this be ok?, Please Help!!! Options

[gt_driFFter]

Hey guys, I'm in a pretty desperate situation and I was wondering if it would be ok to run smaller wheels in the front and the stock ones in the rear? The wheels are only an inch less than stock in diameter and they are about 1/2 inch wider. This would be for 2, maybe 3 months max. I really need to know soon guys!

Thanks!

[LatinKraze]

It will throw of your speedometer a bit and your mpg will decrease a bit if the diameter is smaller.

This post has been edited by LatinKraze: Dec 17, 2004 - 4:48 PM

[macavely]

yea thats ok..

[Ale_lock]

damn i can't find the words to explane it ... but its something i help my cousin with on hit accord back in the day....  its not that hard to do .. they way i'm planning on doing it.. i just have get the pulses to lumnat a small lcd screen and have the light re- reflected back on the the face of the gauges...  ... when i start it up i'll show pictures.. that will explaning it better then i can..
[right][snapback]223013[/snapback][/right]

It will throw of your speedometer a bit and your mpg will decrease a bit if the diameter is smaller.
[right][snapback]223020[/snapback][/right]

Wouldn't it increase slightly since it's rotating less?!

[gt_driFFter]

I'm talking about handling, stress on the suspension, etc. More critical things then my speedo being off a little.

Thanks,
-Josh

[macavely]

I'm talking about handling, stress on the suspension, etc. More critical things then my speedo being off a little.

Thanks,
-Josh
[right][snapback]223026[/snapback][/right]

your fine... handling might feel a little off but you'll ajust ..

[LatinKraze]

damn i can't find the words to explane it ... but its something i help my cousin with on hit accord back in the day....  its not that hard to do .. they way i'm planning on doing it.. i just have get the pulses to lumnat a small lcd screen and have the light re- reflected back on the the face of the gauges...  ... when i start it up i'll show pictures.. that will explaning it better then i can..
[right][snapback]223013[/snapback][/right]

It will throw of your speedometer a bit and your mpg will decrease a bit if the diameter is smaller.
[right][snapback]223020[/snapback][/right]

Wouldn't it increase slightly since it's rotating less?!
[right][snapback]223023[/snapback][/right]

If the circumference of the tire was 2 feet and his temporary wheels were 1 foot in circumference, then the smaller wheel would have to rotate twice as much for one rotation of the larger wheel. His speedo would mark twice the distance actualy traveled. The rotation would be greater.

[LatinKraze]

I think it also throws off the rpm. Can anyone confirm this?

[macavely]

I think it also throws off the rpm. Can anyone confirm this?
[right][snapback]223039[/snapback][/right]

no i;m sure it doesn't... unless i'm wrong ..

[Mynzeyes]

I think it also throws off the rpm. Can anyone confirm this?
[right][snapback]223039[/snapback][/right]

no i;m sure it doesn't... unless i'm wrong ..
[right][snapback]223049[/snapback][/right]

RPM is engine revolutions per minute..not anything to do with drive axles or wheels/etc. .

[1bwilson]

I think it also throws off the rpm. Can anyone confirm this?
[right][snapback]223039[/snapback][/right]

no i;m sure it doesn't... unless i'm wrong ..
[right][snapback]223049[/snapback][/right]

Hehe way to be sure of your self lol

[macavely]

damn know can ever tell when i'm joking... i hate all you muthersukers..

[playr158]

if the wheel is smaller it will read FASTER since the wheel it self moves faster then the larger rims

IF you measure from TIRE (not rim) the diameter, across the tire
and the diameter is the same as the larger wheel (thinner tires then the smaller)
then you should be good for the most part

LARGER rims make your speedo say that you are going slower

and it can effect your RPM just so you know....14" enkies i redline at stock factory red line

18s i redline before that by 400 rmp

but that is just the RMP gauge off.....i really am at factory redline but because of the wheels it reads lower

This post has been edited by playr158: Dec 19, 2004 - 2:34 AM

[jgreening]

and it can effect your RPM just so you know....14" enkies i redline at stock factory red line

18s i redline before that by 400 rmp

but that is just the RMP gauge off.....i really am at factory redline but because of the wheels it reads lower

I know speed, odometer and drive ratios are affected by tire size. However, I was under the impression that the RPM guage is metered off the engine, not the wheels.

[1bwilson]

and it can effect your RPM just so you know....14" enkies i redline at stock factory red line

18s i redline before that by 400 rmp

but that is just the RMP gauge off.....i really am at factory redline but because of the wheels it reads lower

I know speed, odometer and drive ratios are affected by tire size. However, I was under the impression that the RPM guage is metered off the engine, not the wheels.
[right][snapback]223611[/snapback][/right]

You are correct. RPM's are how fast the crank rotates per minute. I dont think it can cause your RPM's to be off.

[playr158]

yes it is off the crank......but it can still mess with your wheels...

aka crank moves tranny which moves wheels its all effects eachother and trust me my eyes can see my gauge

[shid]

While the guage might be differen't (unlikely) there's no way wheel size changes can effect the actual physical RPMs your engine puts out. It's not like your torque curve or powerband are going to shift or anything.

Your handling will get worse; and you'll scrap on a lot of bumps.

[jgreening]

yes it is off the crank......but it can still mess with your wheels...

aka crank moves tranny which moves wheels  its all effects eachother and trust me my eyes can see my gauge

Player, if its off the crank, then the size of the wheels makes no difference. The guage would simply be measuring engine RPM's and the affect of those RPM's through the drivetrain (tranny, wheels, etc) would have no effect. The only way it could possibly affect the tach is if the tach was measured off the wheels and then the ECU computed the RPM's given the gear and wheel speed. Even this makes no sense because you could rev up to 100mph and then take your foot completely off the accelerator. If it were measured off of wheel speed, the tach would not drop - which of course it does.

[Kwanza26]

Wheels size does NOT affect RPMs... it does affect speed and speedometer/odometer. The speedo gear drives the speedometer and odometer, electronically or mechanically, both signaled off of the tranny so bigger/smaller wheels/tires do affect that to some degree only to the drive wheels. RPM is usually a signal from the distributor, crank sensor, or something on the engine, so RPMs will feel no effect from larger/smaller wheels/tires. The RPM gauge is not connected to anything relating to drivetrain aside from engine load.

This post has been edited by Kwanza26: Dec 20, 2004 - 12:05 AM

[playr158]

mwhahaha then my st is just gay then lol.....

but you won't scrape with bigger rims? with 14" rims i was like 2" above the asphalt with 18s i'm 6" above asphalt so no scrape

and not to be a dick....but GT driffter....you need to change your sig...thats just an asshole thing to do.....your a sick, foul, and discusting person if your going to support that idea...personnally i think that if you think thats funny, or cool you should shoot yourself with that gun and do the people with those problems a favor...oh and me a favor for that matter

This post has been edited by playr158: Dec 21, 2004 - 12:47 AM