Jump to content
SAU Community

Recommended Posts

Hey,

My wheels I have currently on my car are 17 inches and I was looking at some nice 18 inch rims, I was just wondering if its alright to get 18 inch rims on a 17 inch stock car. (the car has stock suspensions) i know that it can throw off the speedometer but also wondering by how much it would be, is it alot?

DSC_0458.JPG

DSC_0459.JPG

Link to comment
https://www.sau.com.au/forums/topic/482651-rims-wheel-sizing-on-my-er34-25gt/
Share on other sites

On 7/21/2021 at 8:32 AM, ArcticsLeftGucci said:

if its alright to get 18 inch rims on a 17 inch stock car

Of course it is. A 1" diameter increase on the wheel is a normal and trivial thing to do.

On 7/21/2021 at 8:32 AM, ArcticsLeftGucci said:

i know that it can throw off the speedometer

No it won't. The aim when you put bigger wheels on is to choose a tyre width and (lower) profile to keep the rolling diameter of the new wheel/tyre combo to within a few % of the existing rolling diameter. If you have a known speedo error now (say, you can tell it reads 4km/h fast at 100 km/h, checked by GPS speedo or something equally trustworthy) then you can often choose your new tyre sizing to get rid of some or all of that existing error. Not that you would make this your first priority, but it is an available input to your choices.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Kinda glad I never got to this ..    https://www.facebook.com/groups/1483859159195077
    • @GTSBoy This method was able to get readings of -10 to -2, so it looks like its monitoring.  Now I need to figure out why the vacuum on the line provided isn't alternating with manifold pressure.  I went with 2 lines that an RB25 tuner recommended but I'll get a longer hose and try directly off the back of the manifold.  He may have been used to OEM intake setups while I have a DBW setup that removed the MAF and IACV.  
    • I work at a car detailing and tinting shop called Quark which gets all manner of German cars in usually (mainly due to a contract with Mercedes Benz Kita Osaka, BMW Nishinomiya and others) but every once in a while something special comes in, like a fully restored 1972 HS30 Nissan Fairlady 240ZG... The shop owner had immediately started applying film to the windows as soon as it was in the shop so the interior was completely covered in towels and plastic sheets. But I could get a few photos of the engine bay which was restored like new. Such an amazing car to see in pristine condition in Japan these days.  
    • Was going to say the car pulls up nicely everywhere, especially going into that last long right hander before the main straight. Looks like a lot of fun.
    • Hey Dave, welcome aboard! Good to see another soon-to-be Stagea owner here. The wagons are awesome — plenty of space, still got that Skyline DNA, and loads of potential if you’re into mods. Definitely post up pics when you get it, everyone here loves seeing new builds. What model/year are you looking at?
×
×
  • Create New...