Offset recommendation

Discussion on wheel & tire issues
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SuperDutyDave
Posts: 52
Joined: Fri Aug 08, 2014 5:23 pm
Location: People's Republic of Vermont

Offset recommendation

Post by SuperDutyDave »

I've found some wheels I like here is their size

18"X8.5" 5X120mm. They are offered in 30mm 35mm 42mm offset

Any opinion on which offset would be best....it appears they all will fit but want closest to stock appearance

Thoughts?

Dave
Dave AKA "SuperDuty"

2013 9C1 Caprice PPV

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Navy Lifer
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Re: Offset recommendation

Post by Navy Lifer »

Before making a selection, you need to consider whether you are changing tire size or lowering the car.

The +30mm wheel won't be a good choice, IMO--tire/wheel is pushed too far outboard.

That leaves the +35 & +42 options.

Some comparisons with other wheels:

Camaro - 20's
F is +35 (8")
R is +40 (9") - the result is usually tire contact with wheel opening, requiring the rolling of the fender (inner) lip

Chevy SS sedan - 19's
F is +48 (8.5")
R is +57 (9")

I tend to be conservative--so my first choice would be +42mm, but you might get by with the +35mm option. The issue will be what tire size you intend to use--with tire(s) wider than 255 section width, use the +42 wheel.

235/50-18 use +35 offset (27.3" diameter)
255/45-18 use either offset (27.0 > 27.1" diameter)
anything larger use +42 offset (tire diameters get a little crazy here)
SuperDutyDave
Posts: 52
Joined: Fri Aug 08, 2014 5:23 pm
Location: People's Republic of Vermont

Re: Offset recommendation

Post by SuperDutyDave »

Bill

Thanks for info/opinion

Staying stock hieght and stock tire size.....so sounds like 42mm is the ticket

Want OEM with just a black aluminum wheel instead of steel with plastic cover

Dave
Dave AKA "SuperDuty"

2013 9C1 Caprice PPV

2015 Chevrolet Silverado 2500-HD 4X4 ext-cab

2009 Deere 5525 4WD Full Cab Tractor

2010 Harley Davidaon Road Glide

Tax Payer Paid Chevy Pickup and 400 HP Patrol Boat
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greasychevy
Posts: 251
Joined: Mon Apr 22, 2013 9:46 pm

Re: Offset recommendation

Post by greasychevy »

For reference These are factory front tires, they are 18x8 +35 they stick out a little, if you are going with a wider tire i would say the +42 are good.
The rears are 18x9.5 with a +45 with 285/40/18s
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