how exactly do people manage to get there cars on huge *** rims and keep their cluster accurate? do they just let it read as it does. or is theyre a way to adjust your instruments speedometer tach ect to work accuratly with your new rolling radius? even the slight change in rolling radius.

 

all i know is to get a tire/wheel combo that is closest to the height of my stock size and i'm good.

 

Yup. People usually get bigger diameter rims, but then get tires with a shorter sidewall, so that the overall outer diameter of the tires remains the same. This keeps the speedometer and odometer accurate.

 

So there's absoloutly no way around it? I'm actualy just curious right now its not applying to me. Also if you switch ecu or clusters wouldn't that lead to a different rolling radius as well? For the car it was off or for. Where exactly is the rolling radius informations stored?

And thanks for the replys
Ps I'm in social studys. Lammmeee thank god for sidekicks and hondatech.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dylan_surrender &raquo;</TD></TR><TR><TD CLASS="quote">So there's absoloutly no way around it? I'm actualy just curious right now its not applying to me. Also if you switch ecu or clusters wouldn't that lead to a different rolling radius as well?</TD></TR></TABLE>

Huh? You're not making sense.

Even with larger wheels, you can choose tire sizes whose outer diameter (and rolling radius) is the same, so there is no effect on the accuracy of the gauges.

I can't state it any clearer than that.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dylan_surrender &raquo;</TD></TR><TR><TD CLASS="quote">Where exactly is the rolling radius informations stored?</TD></TR></TABLE>

Look in the FAQ topic stickied at the top of this forum, and you can find a link to various tire size calculators. They can calculate the outer diameter for any tire size. The radius is half the diameter.

 

i was wondering where the programing for the gauges came from. what tells the gauges the speed. is it ecu or timing belt ect. i worded myself horrible on my last post and i apologize i am very new to cars so i know i may sound like an idiot. i meant to say is there any way to assign a different rolling radius to your cluster. or if you switched for example a s2000 cluster into a ek hatch and the s2000 cluster ran accuratly on the s2000 is there a way to set it to the eks rolling radius. i know that isnt completly clear but i dont know techinicle terms haha its so frusting to not be able to comunicate what im trying to say.

 

No one bothers adjusting the gauges because with the proper tire size, there's no need.

I guess I have to say it again.

Even with larger wheels, you can choose tire sizes whose outer diameter (and rolling radius) is the same, so there is no effect on the accuracy of the gauges.

 

Haha ok. I understand that but I also found out today from my freind who's intop trucks you can actualy preset the rolling radius plug in play using a breakout box from the ecu. I figure its the same idea with a car but it does just make more sense to balance it with a low profile tire. Anyone who's putting huge as rims on a civic porlly isn't to worried about accuratwe gauges anyway haha.

 

The gauges remain accurate with the proper size tires, even with much larger rims. So there is no need to worry about accuracy or make an adjustment.

I don't know why you can't understand this, but it's obvious that you can't. We're done.