Wheel offset and spacers question
Thread Starter
Pit Crew
Joined: Sep 2015
Posts: 113
Likes: 13
From: Massachusetts
Wheel offset and spacers question
Hello,
If somebody has the same car as me and their wheel is 18x9.5 +35, and it looks perfect to me, what do I do if I got the same wheel but it's a 18x9 + 45?
If I got the same width with different offset: 18x9.5 + 45, i would just need to get 10mm spacer for it to look the same, right?
However, the width of my wheel is narrower, so how do I take that into account for the spacers? Do I add the difference in size in mm? so, .5 inches to mm = 12.7mm. 12.7 + 10, so about 23 inches would be how big of a spacer to match?
If somebody has the same car as me and their wheel is 18x9.5 +35, and it looks perfect to me, what do I do if I got the same wheel but it's a 18x9 + 45?
If I got the same width with different offset: 18x9.5 + 45, i would just need to get 10mm spacer for it to look the same, right?
However, the width of my wheel is narrower, so how do I take that into account for the spacers? Do I add the difference in size in mm? so, .5 inches to mm = 12.7mm. 12.7 + 10, so about 23 inches would be how big of a spacer to match?
Racer
Joined: Sep 2017
Posts: 1,692
Likes: 382
From: nj
Just for your reference:
On my car, I have the luxury package wheels (same width & offset as F sport) and I am maxed out on the spacer size
18x8 +45 - 25mm spacer front
18x8.5 +50 - 20mm spacer rear
My point is that you definitely don't need a spacer that big, Sasnuke will definitely give you a better idea.
On my car, I have the luxury package wheels (same width & offset as F sport) and I am maxed out on the spacer size
18x8 +45 - 25mm spacer front
18x8.5 +50 - 20mm spacer rear
My point is that you definitely don't need a spacer that big, Sasnuke will definitely give you a better idea.
Thread Starter
Pit Crew
Joined: Sep 2015
Posts: 113
Likes: 13
From: Massachusetts
Just for your reference:
On my car, I have the luxury package wheels (same width & offset as F sport) and I am maxed out on the spacer size
18x8 +45 - 25mm spacer front
18x8.5 +50 - 20mm spacer rear
My point is that you definitely don't need a spacer that big, Sasnuke will definitely give you a better idea.
On my car, I have the luxury package wheels (same width & offset as F sport) and I am maxed out on the spacer size
18x8 +45 - 25mm spacer front
18x8.5 +50 - 20mm spacer rear
My point is that you definitely don't need a spacer that big, Sasnuke will definitely give you a better idea.
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
If the rim is 18x9 +45 and you want the fitment to look the same as 18x9.5 +35, then you need a 15mm spacer.
While the difference in width is 0.5 inches (12.7mm), you would divide that by 2, then add 10mm...so it would be 10mm + 6.35mm = 16.3mm.
Since you can't get a 16.3mm spacer, the closest size is 15mm.
While the difference in width is 0.5 inches (12.7mm), you would divide that by 2, then add 10mm...so it would be 10mm + 6.35mm = 16.3mm.
Since you can't get a 16.3mm spacer, the closest size is 15mm.
Thread Starter
Pit Crew
Joined: Sep 2015
Posts: 113
Likes: 13
From: Massachusetts
If the rim is 18x9 +45 and you want the fitment to look the same as 18x9.5 +35, then you need a 15mm spacer.
While the difference in width is 0.5 inches (12.7mm), you would divide that by 2, then add 10mm...so it would be 10mm + 6.35mm = 16.3mm.
Since you can't get a 16.3mm spacer, the closest size is 15mm.
While the difference in width is 0.5 inches (12.7mm), you would divide that by 2, then add 10mm...so it would be 10mm + 6.35mm = 16.3mm.
Since you can't get a 16.3mm spacer, the closest size is 15mm.
Racer
Joined: Sep 2017
Posts: 1,692
Likes: 382
From: nj
I got H&R Trak spacers that had studs on them and I've gotten to pretty high speeds, hit severe potholes, nothing ever happened. I feel like this depends on the thickness of the spacer because once you put it on, your stock studs are too short to put the wheel on. I feel like anything above 10mm, you should get the spacers with the studs on them
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Thread Starter
Pit Crew
Joined: Sep 2015
Posts: 113
Likes: 13
From: Massachusetts
I got H&R Trak spacers that had studs on them and I've gotten to pretty high speeds, hit severe potholes, nothing ever happened. I feel like this depends on the thickness of the spacer because once you put it on, your stock studs are too short to put the wheel on. I feel like anything above 10mm, you should get the spacers with the studs on them
Instructor
Joined: Jan 2016
Posts: 1,201
Likes: 418
From: IL
In general I’d say the longer stud is going to be less safe, due to stress on the material. Using a hub-centric spacer will alleviate some of that stress, but only if your spacer fits snug on the lip of the hub and the wheel design fits snug on the lip of the spacer.
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
In a normal setup, the hub of the vehicle is carrying the weight/load of the wheel, the nuts at there just as a clamping force to hold the wheel to the vehicle.
With the longer stud, if the spacer is not a perfect fit to the hub and the rim, then the stud would be carrying the load of the wheel, which is not what you want.
Also if you ever change wheels then you need to account for the longer studs and if a spacer is still going to be used.
For myself that has a winter and summer set of wheels, longer studs are not an option as they would be too long for the stock rims I use in winter.
Then I'd have to be into running open ended nuts to make sure they clamp properly, etc. etc. etc....it just becomes a hassle.
Intermediate
Joined: Aug 2020
Posts: 301
Likes: 159
From: TX
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
Depending on how much of a spacer you wanted, those would work as far as I can tell.
As the 2021+ uses wheel bolts and not studs/nuts, you may or may not need longer bolts.
I guess it would help to know what you're looking for specifically...i.e. size of spacer
Thread Starter
Pit Crew
Joined: Sep 2015
Posts: 113
Likes: 13
From: Massachusetts
hi @Sasnuke , i'm about to order spacers for my 2015 IS350 FSport for Volk TE37 SL's.
before doing so can you just confirm these spacer specs will fit? i'm pretty sure 60.1 is the correct bore size from my googling.
Front: 18x9+45. Getting this 15mm spacer: H&R DRM Wheel Spacers - 15mm / 5x114.3 / 12x1.5 / Bore: 60.1 PN: HR-3065602
Rear: 18x9.5+40. Getting a 5mm spacer: H&R DRS Wheel Spacers - 5mm / 5x114.3 / 12x1.5 / Bore: 60.1 PN: HR-10656014
before doing so can you just confirm these spacer specs will fit? i'm pretty sure 60.1 is the correct bore size from my googling.
Front: 18x9+45. Getting this 15mm spacer: H&R DRM Wheel Spacers - 15mm / 5x114.3 / 12x1.5 / Bore: 60.1 PN: HR-3065602
Rear: 18x9.5+40. Getting a 5mm spacer: H&R DRS Wheel Spacers - 5mm / 5x114.3 / 12x1.5 / Bore: 60.1 PN: HR-10656014