73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Wheels & Tires => Topic started by: nucknoel89 on July 10, 2008, 09:46:18 pm
-
I'm a newbie when it comes to this kind of stuff. If I did a 2/4 drop would 22x9s still fit and function normally?
-
What size tires and what rim specs are you planning on running? Generally, you should be ok.
-
What size tires and what rim specs are you planning on running? Generally, you should be ok.
Well the rims I'm looking at are Fiero Vivid wheels, and on the one site I was looking at the 2 tire sizes it gave me were:
305/40/R22 and 265/35/R22 - Falken S/TZ-04 High Performance Tires
At one point I knew what those numbers meant but now I don't remember. These are the size numbers, yes?
-
yes,
305/40r22 means
the width of the tire is 305mm (12")
40 means the sidewall is 40% of 305mm = 122mm (4.8") tall
R means radial
22 means 22" rim
-
305mm =12" wide
40 = 40% aspect ratio ( 40% of 12") = 4.8" sidewall height
22 = rim diameter
Overall height = 31.6" (roughly)
265/35/22 = 10.4" wide/ 3.6" high/ on 22" rim. Overall height = 29.2"
In my opinion, the 305' are going to be on the extreme side of wide for an 9" rim. In addition, they won't fit the front without rubbing.
The 265's are much better suited, but you need the wheels to be about 5-5.5" Backspacing for them to fit and not hit the fender lip in the front.
Are you going with the same size all around or.....
-
305mm =12" wide
40 = 40% aspect ratio ( 40% of 12") = 4.8" sidewall height
22 = rim diameter
Overall height = 31.6" (roughly)
265/35/22 = 10.4" wide/ 3.6" high/ on 22" rim. Overall height = 29.2"
In my opinion, the 305' are going to be on the extreme side of wide for an 9" rim. In addition, they won't fit the front without rubbing.
The 265's are much better suited, but you need the wheels to be about 5-5.5" Backspacing for them to fit and not hit the fender lip in the front.
Are you going with the same size all around or.....
I think I'd want to go same size all around unless you'd reccoment otherwise. Also, what is backspacing?
-
Backspacing is the distance from the back of the rim to the hub mounting flange on the rim.
Offset is the distance the mounting flange is from the center of the rim.
* here's an image that might help
(http://www.tirerack.com/images/wheels/tech/offset.gif)
-
Backspacing is the distance from the back of the rim to the hub mounting flange on the rim.
Offset is the distance the mounting flange is from the center of the rim.
* here's an image that might help
(http://www.tirerack.com/images/wheels/tech/offset.gif)
Okay thanks. The sites I've looked at for these rims don't seem to say what the offset is. I only know I saw an '85 C10 in Truckin magazine with these rims and figured they should theoretically work with my truck as well.
-
Here's a link to the rims:
http://www.discountedwheelwarehouse.com/Store_Detail.cfm?ID=132748&InfoID=2505&ShowLarge=True&SnipID=3700
-
call them and make sure...they have the backspacing you want. These trucks look ridiculous when the wheels are tucked way in like they were from the factory. You may even want more of an offset in the rear. I suggest you add where you want it to be to your existing wheels and then see if they have anything close.
-
call them and make sure...they have the backspacing you want. These trucks look ridiculous when the wheels are tucked way in like they were from the factory. You may even want more of an offset in the rear. I suggest you add where you want it to be to your existing wheels and then see if they have anything close.
Okay, found another site and it had some specs. It said the offset was 34. Is that good? Also, what would be the bolt pattern I'd need?
-
You need to break out the tape measure and make some measurements. Sounds like their specs are in mm so just use a conversion calculator from your tape measure.
http://www.worldwidemetric.com/metcal.htm
-
You need to break out the tape measure and make some measurements. Sounds like their specs are in mm so just use a conversion calculator from your tape measure.
http://www.worldwidemetric.com/metcal.htm
Okay so it's an offset of 1.33 approximately. And how exactly would I measure for the bolt pattern?