i just got a SI and i really want these wheels

but factory has 17s on the car. so my question is will geting big wheels mess up my nav. im sure it will mess with my mph but if ya got any info please let me know.

 

No it wont mess aything up.

Honda recommended sizes of tires to minimize those changes when upgrading.

Also in the navigation control settings u can adjust for different wheels etc

 

How do rim sizes affect navi? [Genuinely curious]

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by elohel &raquo;</TD></TR><TR><TD CLASS="quote">How do rim sizes affect navi? [Genuinely curious]</TD></TR></TABLE>

throws off mph, which can change calculations of estimated time on trips etc

 

Where can u adjust for larger tires???

 

i didnt know you can adjust for tire size in Navi? I've been in every menu and can't figure it out. Help?

 

GPS Satellites tell the car where it is (in numerical terms) and the car access the DVD to put a stored representation of your position (based on the numbers rec'd from the Satellite) on you screen. Tires are a non issue.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by coupeX &raquo;</TD></TR><TR><TD CLASS="quote">GPS Satellites tell the car where it is (in numerical terms) and the car access the DVD to put a stored representation of your position (based on the numbers rec'd from the Satellite) on you screen. Tires are a non issue. </TD></TR></TABLE>

Honda Navi uses both GPS satellites to pinpoint location a well as an yaw rate sensor to keep track of vehicle direction and the speed sensor to calculate distances traveled. Anything that will change the speedo will have an impact on the navigation. As long as the OP gets the tire size reccomended by honda with the HFP wheels he'll be fine.

 

so i guess nobodys had to deal with this that can help

 

why not just get the 17 inch HFP rim? Looks the same and can use your new tires off your current rim.

 

Just get the correct tire size to go with the 18's and you will have no problems.

 

If you use the recommended tires on the sticker that comes along with your HFP rims, the radius of your wheel with tire is gonna be the same as your current wheel with tire.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yuning83 &raquo;</TD></TR><TR><TD CLASS="quote">why not just get the 17 inch HFP rim? Looks the same and can use your new tires off your current rim. </TD></TR></TABLE>
x2

 

so basically...changing tires affects the calculations of the navi system...pretty crazy...so how about adding a turbo to your car?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by i-spit-hotfire &raquo;</TD></TR><TR><TD CLASS="quote">so basically...changing tires affects the calculations of the navi system...pretty crazy...so how about adding a turbo to your car? </TD></TR></TABLE>

turbo doesn't affect the VSS or speedometer..

changing wheel and tire size has had this effect on speedos since the beginning of time. some of you ask your fathers or your local mustang guys about changing speedo gears or gearboxes to make the speedo work correctly with different sized wheels/tires.

Since the Navi uses signal from the speedo/VSS, then it is similarly effected.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FBPSidan &raquo;</TD></TR><TR><TD CLASS="quote">Where can u adjust for larger tires???</TD></TR></TABLE>

its in the system diagnostic menu

I'll take some pix later of it, i gotta snap some pix of the car for some other stuff

 

that would be sveet