189 Wheels Weigh HOW much? 32lbs!

Antetokounmpo · 07-20-2016, 08:54 AM

I picked up a set of Apex Arc-8s the other day. When I was putting them on I was astonished with how light they were compared to my 189 wheels. I knew the arc-8s were light and I knew the 189 wheels were not light but I didn't think they were as heavy as they came out to be. Unfortunately, both wheels had tires mounted so these may not be exact weights. But according to tire rack, both tires weigh 26 lbs.

189 18x8.5 w/ 26lb tire - 57lbs

Arc-8 18x8.5 w/ 26lb tire - 43lbs

This shows the arc-8 weighing 18lbs (apex says 18lbs) and the 189 weighs 31lbs. 14lbs of rotational mass saved per corner is HUGE! This is similar to saving about 120 lbs of static weight from the car. In general, 1lb rotational mass saved equates to 2lbs static mass saved.

Mr. Tasty · 07-20-2016, 05:52 PM

yea, I can't wait to replace my 189s with a set of Apex Arc8's. I am wanting to go wider than 8.5 in the rear though. Thinking closer to 10".

vautrain · 08-24-2016, 05:01 PM

That is huge. Have you noticed acceleration, handling or fuel economy gains as a result? Interested to know how tangible the difference is.

Banana Clipper · 08-24-2016, 05:33 PM

Quote:

Originally Posted by Harambe

I picked up a set of Apex Arc-8s the other day. When I was putting them on I was astonished with how light they were compared to my 189 wheels. I knew the arc-8s were light and I knew the 189 wheels were not light but I didn't think they were as heavy as they came out to be. Unfortunately, both wheels had tires mounted so these may not be exact weights. But according to tire rack, both tires weigh 26 lbs.

189 18x8.5 w/ 26lb tire - 57lbs

Arc-8 18x8.5 w/ 26lb tire - 43lbs

This shows the arc-8 weighing 18lbs (apex says 18lbs) and the 189 weighs 31lbs. 14lbs of rotational mass saved per corner is HUGE! This is similar to saving about 120 lbs of static weight from the car. In general, 1lb rotational mass saved equates to 2lbs static mass saved.

I'm with you, Arc8s and/or TE37's are the way to go for anyone concerned with weight wanting to save weight

Antetokounmpo · 08-25-2016, 08:13 AM

Quote:

Originally Posted by vautrain

That is huge. Have you noticed acceleration, handling or fuel economy gains as a result? Interested to know how tangible the difference is.

The turn in is so much crisper now due to the significantly lower moment of inertia. I'm sure it's slightly quicker too due to the weight.

07-20-2016, 08:54 AM	#1
Antetokounmpo Brigadier General 1560 Rep 3,475 Posts Drives: E90 6MT FBO; '18 F150 Platinum Join Date: Jul 2013 Location: WI iTrader: (3) Garage List 2018 Ford F-150 Pla ... [0.00] 2008 BMW 335xi [0.00]	189 Wheels Weigh HOW much? 32lbs! I picked up a set of Apex Arc-8s the other day. When I was putting them on I was astonished with how light they were compared to my 189 wheels. I knew the arc-8s were light and I knew the 189 wheels were not light but I didn't think they were as heavy as they came out to be. Unfortunately, both wheels had tires mounted so these may not be exact weights. But according to tire rack, both tires weigh 26 lbs. 189 18x8.5 w/ 26lb tire - 57lbs Arc-8 18x8.5 w/ 26lb tire - 43lbs This shows the arc-8 weighing 18lbs (apex says 18lbs) and the 189 weighs 31lbs. 14lbs of rotational mass saved per corner is HUGE! This is similar to saving about 120 lbs of static weight from the car. In general, 1lb rotational mass saved equates to 2lbs static mass saved. __________________ 2008 335xi 6MT \| VRSF Catless DP \| VRSF 7" FMIC \| VRSF CP \| TIAL BOV \| DCI \| MHD 2+ BC Racing BR \| Stoptech 600 \| Firehawk Indy 500 255 Square \| Atric Altimax 225 Sq. 2018 F-150 Platinum 701A \| FX4 \| 3.5 EcoBeast Last edited by Antetokounmpo; 07-20-2016 at 02:47 PM..
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07-20-2016, 05:52 PM	#2
Mr. Tasty Captain 429 Rep 707 Posts Drives: AW 335i Mperformance Join Date: Apr 2016 Location: Gilbert iTrader: (0)	yea, I can't wait to replace my 189s with a set of Apex Arc8's. I am wanting to go wider than 8.5 in the rear though. Thinking closer to 10".
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08-24-2016, 05:01 PM	#3
vautrain Private First Class 15 Rep 101 Posts Drives: 2007 E91 xDrive Join Date: Aug 2016 Location: Oak Park/Chicago iTrader: (0) Garage List 2007 BMW 328xi Spor ... [0.00]	That is huge. Have you noticed acceleration, handling or fuel economy gains as a result? Interested to know how tangible the difference is.
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