Wheel bolt pattern measurement

[Sentry]

Yet another point of confusion for me.... Uhg....

I am trying to make sure my axle on the trailer matches that of the truck when it comes to the wheels. So I can have a couple of spares for both.

Looking the RPO code for my truck it says N90

N90 Wheels, 4 – 15″ x 7″ (38.1 cm x 17.8 cm) cast aluminum
N90 Wheels, 4 – 15″ x 7″ (38.1 cm x 17.8 cm) aluminum, cast
N90 Wheel: 15 x 7, Aluminum Cast, 4.75 Inch Bolt Circle
N90 WHEEL 15 X 7, ALUMINUM CAST, 4.75-INCH BOLT CIRCLE

LMC truck sells wheels for the 99 Tahoe as 5 on 5
2WD 1/2 ton w/o Diesel 5 lug X 5"

WTF?

I just need to know where to measure or should I just take it somewhere to have them do it.... Only issue I have at the moment is I cant drive the truck out of the building without tearing up the yard and possibly getting stuck. Trying to keep the truck clean at the moment for painting.

Would measuring the holes on the spare help me? I took that off as I need to replace that tire anyway. Going to put 31" on it so I have a full sized spare...

 

[BirchyBoy]

http://www.mrt-wheels.com/boltpattern.html

 

[_Dylan_]

4wd chevy is 6x5.5 (same as toyota, nissan, mitsubishi, isuzu, jeep wagoneers)
2wd (up to 98 or 99) is 5x5

You shouldn't have a problem finding some 6 lug wheels on craigslist. The only thing to watch out for is the newer ford f150 6 lug and the dodge 6 lug. Their metric and won't fit, but I don't see those pop up that often.

Chevy s10 have 5x4.75, which accounts for the other rpo codes.

 

[Sentry]

Well I bought measuring caliper today, took the wheel off and measured... 5"

What do ya think?

Center to center was 4.75

 

[_Dylan_]

yup, 5x5

jeep wrangler JK uses 5x5, I think some other chryslers do also