How to figure wheel backspacing
Thread Starter
Joined: Oct 2016
Posts: 1,584
Likes: 374
From: Armstrong BC
How to figure wheel backspacing Hey guys how is everybody figuring their backspacing when going to a wider wheel??
So let's say I got 17x9.5 with a 5.5" BS and want to go to a 17x10 wheel, is it just that easy to add another half inch to the backspacing?? So the 17x10 would have a 6" BS??
Trying to wrap my brain around things and some of the stuff I've found online are a little confusing
Thanks guys.
So let's say I got 17x9.5 with a 5.5" BS and want to go to a 17x10 wheel, is it just that easy to add another half inch to the backspacing?? So the 17x10 would have a 6" BS??
Trying to wrap my brain around things and some of the stuff I've found online are a little confusing
Thanks guys.
TECH Junkie
Joined: Nov 2013
Posts: 3,913
Likes: 366
From: White Bear, Mn
Wheel offset is +/- the center point of the wheel where the tire bead seals.
Backspacing is from where ever your offset point is to the very edge of the wheel.... usually around 1/2 in. past where the tire bead seals.
Backspacing is from where ever your offset point is to the very edge of the wheel.... usually around 1/2 in. past where the tire bead seals.
Hey guys how is everybody figuring their backspacing when going to a wider wheel??
So let's say I got 17x9.5 with a 5.5" BS and want to go to a 17x10 wheel, is it just that easy to add another half inch to the backspacing?? So the 17x10 would have a 6" BS??
Trying to wrap my brain around things and some of the stuff I've found online are a little confusing
Thanks guys.
So let's say I got 17x9.5 with a 5.5" BS and want to go to a 17x10 wheel, is it just that easy to add another half inch to the backspacing?? So the 17x10 would have a 6" BS??
Trying to wrap my brain around things and some of the stuff I've found online are a little confusing
Thanks guys.
there’s several wheel offset calculators online you can Google and play around with offset and backspacing accordingly to get the fitment you’re looking for while measuring with a wheel you know the specs of on the actual car. So if you know you want the wheel 1” further out or 1” further in or 1” wider with the same or whatever you can basically figure it out.
a wheel almost always measures 1” wider than its stated width because wheels are measured to tire bead to bead. Therefore a 9” wheel will actually measure 10” from edge to edge, but only 9” where the tire bead sits. Factor this in when measuring
Thread Starter
Joined: Oct 2016
Posts: 1,584
Likes: 374
From: Armstrong BC
a 17x9.5 with a 5.5” backspacing will have the same outer wheel lip position as a 17x10” wheel with a 6” backspacing. Now if you want to move the wheel lip out toward the fender edge when going to the 17x10 then going to a 17x10” wheel with a 5.5” backspacing leaves the inside distance from wheel mounting flange to inside edge of wheel the same and adds the extra wheel width to the outside lip of the wheel instead.
there’s several wheel offset calculators online you can Google and play around with offset and backspacing accordingly to get the fitment you’re looking for while measuring with a wheel you know the specs of on the actual car. So if you know you want the wheel 1” further out or 1” further in or 1” wider with the same or whatever you can basically figure it out.
there’s several wheel offset calculators online you can Google and play around with offset and backspacing accordingly to get the fitment you’re looking for while measuring with a wheel you know the specs of on the actual car. So if you know you want the wheel 1” further out or 1” further in or 1” wider with the same or whatever you can basically figure it out.
