Weight of stock wheels, '04 & '05

DuckStu · 11-17-2006, 04:56 AM

This should really be added into the wheel info sticky above.

2004 STI wheel 15 lb 15.2 oz (15.95 lbs)
2005 STI wheel 19 lb 7.7 oz (19.48 lbs)

Measurements taken using a TIF 9010A digital refrigerant charging scale that reads to 1/10 oz, and up to 110 lbs. Accurate to .5% (1.6 oz at 20 lbs)

***austinpike*** · 11-17-2006, 05:10 AM

Quote:

Originally Posted by DuckStu

Measurements taken using a TIF 9010A digital refrigerant charging scale...

nice.

ebelp · 11-17-2006, 05:24 AM

Holy crap...4lbs difference between the two? I would've guessed much less.

Tank · 11-17-2006, 09:32 AM

Good work - I guess this will be the official reference point for stock wheel weights until someone comes up with something better.

AnorexicSTI · 11-17-2006, 09:37 AM

Quote:

Originally Posted by DuckStu

This should really be added into the wheel info sticky above.

2004 STI wheel 15 lb 15.2 oz (15.95 lbs)
2005 STI wheel 19 lb 7.7 oz (19.48 lbs)

Measurements taken using a TIF 9010A digital refrigerant charging scale that reads to 1/10 oz, and up to 110 lbs. Accurate to .5% (1.6 oz at 20 lbs)

Makes sense... people underestimate how much weight the 5x114.3 mm bolt pattern adds... usually, going from 7.5 to 8" will add about 1-1.5 lbs, but that bigger center section really drives up the weight, in this case by about 2 lbs.

I weighed my tire wheel and it was 45 lbs... 25.5 for tire, which makes sense at it's current wear point... it started at roughly 27 lbs.

mxpop · 11-17-2006, 09:53 AM

agreed, and fyi,

my stock wheel/tire was 44lbs on digital bath scale.

stock wheels with 245-45-17 nitto nt01 tires was the same.

btw, '06 STI

**nandanrp** · 11-20-2006, 11:24 AM

Added to sticky, good info, thanks!

**Alex** · 11-20-2006, 11:41 AM

The weights of these always seem to change

Nicely done!

fourseasonsandles · 11-20-2006, 12:46 PM

It's about time someone weighed both wheels on a scale and posted them. I had found someone that had posted the 05 weight, but never the 04. Good deal!

Muffnbluff · 11-20-2006, 06:43 PM

Dang, I had no idea the bolt pattern made that much of a difference. I guess what the 04s lack in size they make up for in lack of weight.

DuckStu · 11-20-2006, 08:29 PM

Quote:

Originally Posted by AnorexicSTI

I weighed my tire wheel and it was 45 lbs... 25.5 for tire, which makes sense at it's current wear point... it started at roughly 27 lbs.

Wheel weight and especially tire weight is important to me. I will be weighing some Volk CE28 18" soon (friend bought them).

I weighed a stock tire (Bridgestone REO70) off a 2005 STI that had 9,000 miles ish on it and it weighed in at 25.54 lbs. So 26.5 or 27 could be right when it's new. I have thought of stopping ion at a few dealers and weighing one.

I weighed my Pirelli P Zero Neros (225/45/17) that had 70% tread left and they weighed in at 23.75 lbs.

I took them off to install Conti Extreme Contacts. They weigh a cool 20.34 lbs new.

I end up with a wheel, 225/45/17 tire, valve stem, center-cap, and wheel weight combo that comes in at a hair under 36 lbs. That's almost 9.5 lbs per wheel less than the 05 setup, and most of that weight (6.2 ish lbs of tire) is near the edge. Some have guessed that it's worth 15 hp at the ground.

I posted a bunch of other weights in the lightweight part thread (end of page 3) under the "suspension, handling, stiffening" forum.

**nandanrp** · 11-21-2006, 07:12 AM

Quote:

Originally Posted by DuckStu

Wheel weight and especially tire weight is important to me. I will be weighing some Volk CE28 18" soon (friend bought them).

I weighed a stock tire (Bridgestone REO70) off a 2005 STI that had 9,000 miles ish on it and it weighed in at 25.54 lbs. So 26.5 or 27 could be right when it's new. I have thought of stopping ion at a few dealers and weighing one.

I weighed my Pirelli P Zero Neros (225/45/17) that had 70% tread left and they weighed in at 23.75 lbs.

I took them off to install Conti Extreme Contacts. They weigh a cool 20.34 lbs new.

I end up with a wheel, 225/45/17 tire, valve stem, center-cap, and wheel weight combo that comes in at a hair under 36 lbs. That's almost 9.5 lbs per wheel less than the 05 setup, and most of that weight (6.2 ish lbs of tire) is near the edge. Some have guessed that it's worth 15 hp at the ground.

I posted a bunch of other weights in the lightweight part thread (end of page 3) under the "suspension, handling, stiffening" forum.

Haha cool! That's my winter setup

(225/45-17 contiextremes on silver BBS). The car did feel faster the other night, I attributed it to the colder weather...could be the lower rolling resistance too

Too bad they don't grip the same in the corners!

WRXSTi0487 · 11-21-2006, 06:39 PM

I weighed my stock 04 wheels with stock tiresand got 39.5lbs and then weighed my Rota P45F 18X8 with Kumho MX 235/40/18 and they were 44lbs

JayZ28 · 12-26-2006, 11:43 AM

Does this mean that the PFF7s at ~20 lbs is only marginally heavier than the stockers on an 05/06? Maybe the PFF7s could be considered an "upgrade" over the stock BBS?

-Jay

**Gruppe-S** · 12-26-2006, 12:53 PM

19lbs is fairly porky for a 17" wheel. Keep in mind that the wider or larger the wheel the greater increase in rotational mass, it's not the dead-weight of the wheel as much as the rotational mass that makes the difference.

If you're in the market, check out our 16.5lbs Rays 57F (cold forged) in 18x8.5 for the 05+ cars. They are far less than what most cast wheels cost.

Cheers

Gary
Gruppe-S

11-17-2006, 04:56 AM	#1
DuckStu HowTo Contributor Car: 04 Subaru STI Fav Mod: More power Location: Detroit, Michigan Posts: 325 Join Date: Sep 2006 Trader Rating: (0)	Weight of stock wheels, '04 & '05 This should really be added into the wheel info sticky above. 2004 STI wheel 15 lb 15.2 oz (15.95 lbs) 2005 STI wheel 19 lb 7.7 oz (19.48 lbs) Measurements taken using a TIF 9010A digital refrigerant charging scale that reads to 1/10 oz, and up to 110 lbs. Accurate to .5% (1.6 oz at 20 lbs) This ad is not endorsed by this member. Please register or login to hide this ad.

12-26-2006, 12:53 PM	#15
Gruppe-S Authorized Vendor Car: 01 Subaru WRX STi Spec C Fav Mod: Coming Soon Posts: 3,758 Join Date: Aug 2005 Trader Rating: (13)	19lbs is fairly porky for a 17" wheel. Keep in mind that the wider or larger the wheel the greater increase in rotational mass, it's not the dead-weight of the wheel as much as the rotational mass that makes the difference. If you're in the market, check out our 16.5lbs Rays 57F (cold forged) in 18x8.5 for the 05+ cars. They are far less than what most cast wheels cost. Cheers Gary Gruppe-S This ad is not endorsed by this member. Please register or login to hide this ad.

11-17-2006, 05:24 AM	#3
ebelp Professional STI Driver Car: 05 PSM STi Fav Mod: XM Location: NY Posts: 411 Join Date: Jan 2006 Trader Rating: (0)	Holy crap...4lbs difference between the two? I would've guessed much less.

11-17-2006, 09:32 AM	#4
Tank Senior STI Driver Car: 05 Subaru WRX STi OB Fav Mod: NY Rangers license plate frame Location: Middlesex County, NJ Posts: 382 Join Date: Aug 2005 Trader Rating: (0)	Good work - I guess this will be the official reference point for stock wheel weights until someone comes up with something better.

11-17-2006, 09:53 AM	#6
mxpop Spec C Club Car: '06 STI Fav Mod: air freshener!!! Location: Santa barbara area Posts: 2,300 Join Date: Jan 2006 Trader Rating: (2)	agreed, and fyi, my stock wheel/tire was 44lbs on digital bath scale. stock wheels with 245-45-17 nitto nt01 tires was the same. btw, '06 STI

11-20-2006, 11:24 AM	#7
nandanrp Indiatr0n in yo IWDPL Car: 05FTW OBP STi Fav Mod: Brum Brum Location: downtown Chicago Posts: 48,830 Join Date: Jun 2004 Trader Rating: (11)	Added to sticky, good info, thanks!

11-20-2006, 11:41 AM	#8
Alex Authorized Vendor Car: 2004.5 STi Fav Mod: alcantara...everything! Location: atlanta, ga Posts: 1,915 Join Date: Nov 2003 Trader Rating: (11)	The weights of these always seem to change Nicely done!

11-20-2006, 12:46 PM	#9
fourseasonsandles Silver Member Car: 06 CGM Wingless Fav Mod: The Newest One! Location: Ra cha cha NY Posts: 3,337 Join Date: Sep 2005 Trader Rating: (0)	It's about time someone weighed both wheels on a scale and posted them. I had found someone that had posted the 05 weight, but never the 04. Good deal!

11-20-2006, 06:43 PM	#10
Muffnbluff DOMINATOR Car: 05 STi OBP Fav Mod: Strut Clunk Location: STL Posts: 5,613 Join Date: May 2005 Trader Rating: (5)	Dang, I had no idea the bolt pattern made that much of a difference. I guess what the 04s lack in size they make up for in lack of weight.

11-21-2006, 06:39 PM	#13
WRXSTi0487 STI Driver Car: 07 STi LTD #091 UGM Fav Mod: APS Exhaust Location: Elberta, AL Posts: 242 Join Date: Aug 2006 Trader Rating: (7)	I weighed my stock 04 wheels with stock tiresand got 39.5lbs and then weighed my Rota P45F 18X8 with Kumho MX 235/40/18 and they were 44lbs

12-26-2006, 11:43 AM	#14
JayZ28 Lurker Car: 01 Subaru WRX STi Sp Fav Mod: Coming Soon Location: Seattle/Bothell Posts: 7 Join Date: Sep 2005 Trader Rating: (0)	Does this mean that the PFF7s at ~20 lbs is only marginally heavier than the stockers on an 05/06? Maybe the PFF7s could be considered an "upgrade" over the stock BBS? -Jay