Im too lazy to take the front wheels off to weigh them

Does anyone know what a stock front wheel/tire weight vs. 20" HRE three piece w/tire?

Thanks,
Jason

 

Not sure on specifics but I know that the stock wheels are HEAVY, somewhere in the 30's. HRE 20's should be somewhere in the mid to high 20's. The issue here is that while the 20's will be lighter, the majority of the rotational mass will be shifted towards the outer limits of the wheel/tire combo. The exact science isn't exactly known to me, but there are compromises for shoehorning 20's onto your car.

 

On my 55- the stock fronts weighed 27 lbs (no tires). My HRE's weigh 20.5 lbs but they are 19 inch Comp series wheels. I dont know the stock tire weight.

 

the rear wheels are 25lbs.the fronts are maybe a few ounces less.

 

If you are looking for a performance improvement it’s not going to be from going from stock to 20” even if you save 10 lbs on each wheel. Basically the only improvement you will get will be Visual. And that in itself maybe enough.

 

What I am looking for is the weight of a stock front wheel w/tire, and also the weight of an HRE 3 pc front 20" wheel w/tire.

I have both, but do not have them handy for weighing. When I rent the dragstrip again I want the lighter of the two options on the front of the car.

Thanks,
Jason

 

Well that makes perfect cense now. But like Cylinder head said if all the weight is on the outside it will have adverse affects on acceleration. The best way to find out which is better whether one is lighter or not is to roll both down a short slope. The first to make it down is the better choice.

 

I would say that is not entirely correct- yes intertia and rotataional mass is a huge factor in going from 18's to 20's but if you save 10lbs per corner that is 40lbs in unsprung weight which is a huge number. Trust me I know it because I did it and my car is faster- yes I am on 19's but there are gains on weight loss if the number is large enough.

But if its soley performance then you need to get a 1 piece 18 inch wheel. As for the original question I have seen my factory wheel weighed ... it was 27 lbs and the rear was 29 lbs (E55). You can pull the tire specs from TireRack's site but I would guess their weight to be around 28 to 30lbs each.

 

I'm assuming you are talking baout straight pulls. Can you comment on handling feel with heavy 18s vs lighter 19s?

 

No.

 

GGGGRRRRRR!!R!!R

I'm pretty hung on 18s, anyway so that's ok. I was just curious.

 

Ha! thought you would like that ... asked and answered.

I had my 18's for all of 3 days but to go up 1 inch in diameter and drop 7 lbs in the front and 9 in the rears has got to mean something and the sotp feel is that handling is better. Truly what has given my car the boost in the corners is the LSD.

 

Thats why I mention rolling them and making he decision based on that. If I read his post correctly he just wanted something to bolt up to go in a straight line as in just for the drag strip use only. His best bet is to use a rim and tire just for this purpose but since he has a choice of only two rims and tires. he wants to know which would be best.

 

Since the front wheels are not the drive wheels, I think for drag-racing the lighter set would be better. More weight transfer as well.

I guess I will have to pull the rims/tires off and weigh them.

In the meantime if anyone has the info I would like to know......

Front stock wheel/tire weight?

Front 3pc. HRE 20" wheel/tire weight?

Thanks,
Jason