Stock Wheels Weight [Archive] - SaabCentral Forums

: Stock Wheels Weight


Fahad_H
3rd January 2011, 08:59 PM
I am considering to have a go at the local F1 tracks to compare lap times with some of the road cars that go there.
For a start, I will not drive on my tires, so I need to get a set of tires for track day use. I will also need wheels for easy swap. My current wheels are 18, I think I better go with 17" for lower costs and maybe better performance.

I would like to know how much my current wheels weigh in order to be able to judge how beneficial would be to invest in low weight wheels such as OZ Alleggerita at 16.2 lb for the 17x8".

Also should I go with 245/45R17 or 225/45R17. My current are 225/45R18.

http://www.trollhattansaab.net/wp-content/uploads/2007/07/2008saab9-3.jpg


Thank you

kanundrum
3rd January 2011, 09:34 PM
Your Looking at about 24lbs give or take a few lbs. I recommend something light weight about 17lbs.

Fahad_H
3rd January 2011, 09:43 PM
going from 24 to 17 per each wheel should be great. Any idea about weight differences in these tires of the same model 225/45 R18, 245/45R17, 225/45R17?

245/45 R17 would look good on the car, would it fit straight away?

I am thinking to use some kind of track day tires from Nitto.

Thank you

kanundrum
3rd January 2011, 09:44 PM
Tire weights are minimal I think but I am upgrading to 245 with a different wheel my self in the summer time. I am thinking something like OZ ultraleggera's with a 35 offset. That should fit a 245 Nice, its all about the offset.

Silver0393
3rd January 2011, 09:49 PM
The NT555's from Nitto are good performance tires you could even run a 235 and have solid grip/handling.

Fahad_H
4th January 2011, 06:25 AM
this is the sizes recommended by Tire Rack for my car

Offset: 40mm
Bolt Pattern: 5-110
Rec. Tire Size:235/45-17

Should I go with 35mm and 245/45?

if my car has 225/45 R18 (25.97 in), I need at least 245/45 R17 (25.68 in) to maintain the height, I don't want the rim/tire package to look very small.


thanks

Silver0393
4th January 2011, 11:37 AM
I would go with the recommend tire size with an 8" wide wheel the widest you should go is 245, but 235 will insure you don't have rubbing isssues and as for weight is concerned I think 235 would be wide enough especially with a light weight wheel. I would hate to tell you that 245 is perfect, and then you end up with rubbing issues. I have 225/60/15's right now and I'm rubbing slightly on the drivers side. I think you get a 17" wheel with 235's on it and you will be set.

Fahad_H
4th January 2011, 12:02 PM
The tire I am looking to buy has only 225/45R17, 235/40R17 245/45R17 for my application.

here is a comparison between my stock tires and the the sizes available.

advice please :D


http://www.freeimagehosting.net/uploads/25f6c66429.png

kanundrum
4th January 2011, 12:16 PM
I would stick with Tires that are 245/45/17 (you always want to go below a 3% difference because of the spedometer)

Make sure the Rim is a 17 x 8 Rim with a proper offset (35 to max 38)

You shouldn't have too much rubbing issues.

Fahad_H
4th January 2011, 01:32 PM
That's my choice too, I don't want to go with very small tires. The 235/45 would be ideal, but not available.

Would the 35 offset make the wheels stick out?

I am going to place the order early Feb.

Thanks

jim808
4th January 2011, 01:49 PM
Don't know the exact weight of your rim but I'll give you an example of how much mine weigh. I took one off recently and weighed it. 17x7.5 inch 5 spoke aero rim with stock conti pro contact 2/32" was 44 pounds.

So the rim alone should be about 23-24 pounds.

This is a pretty good article to read.

http://www.caranddriver.com/features/10q1/effects_of_upsized_wheels_and_tires_tested-tech_dept

kanundrum
4th January 2011, 01:52 PM
That's my choice too, I don't want to go with very small tires. The 235/45 would be ideal, but not available.

Would the 35 offset make the wheels stick out?

I am going to place the order early Feb.

Thanks


I don't think they would stick out too much I would say best to talk to tirerack and see what they recommend

Fahad_H
4th January 2011, 02:10 PM
Don't know the exact weight of your rim but I'll give you an example of how much mine weigh. I took one off recently and weighed it. 17x7.5 inch 5 spoke aero rim with stock conti pro contact 2/32" was 44 pounds.

So the rim alone should be about 23-24 pounds.

This is a pretty good article to read.

http://www.caranddriver.com/features/10q1/effects_of_upsized_wheels_and_tires_tested-tech_dept

I weighed my steel spare with tire today, it was 20kg. I really want to know my 18" weight. too bad the dealership don't have it in the parts store, otherwise I would love to go weigh it. :D

I need to know the difference between my current package and what I am planning to get. That article is very informative. Saving weight on the wheels is very important.

I decided to go with OZ Alleggerita HLT (http://www.tirerack.com/wheels/WheelCloseUpServlet?target=runWheelSearch&initialPartNumber=W0182420322MGS&wheelMake=O.Z.&wheelModel=Alleggerita+HLT&wheelFinish=Matte+Graphite+Silver&showRear=no&autoMake=Saab&autoModel=9-3+Aero+Sedan&autoYear=2008&autoModClar=FWD&filterFinish=All&filterSize=17&filterBrand=All&filterSpecial=false&filterNew=All&filterWeight=W_16_18&sort=Brand) at 16.2lb each. For the tires, I will go with Nitto semi slick road course tires. I assume they are lighter than road tires, So maybe going with 245/45R17 will not be heavier than 225/45R18?

I don't think they would stick out too much I would say best to talk to tirerack and see what they recommend

Cool, I went to take a look at my car, I think there is room in the fender well for wider wheels/tires.

thanks

Fahad_H
4th January 2011, 02:56 PM
Following the article about saving weight in wheels helps in acceleration, I replaced the wheels in my MX5 during the middle of the season to something like 2kg lighter per wheel while keeping the same sizes and tires. It helped a lot. :D

http://www.ma5daracing.com/gallery/albums/2010/autumn1/Ma5da2010AutumnChamp-61.jpghttp://www.ma5daracing.com/gallery/albums/2010/autumn1/Ma5da2010AutumnChamp-82.jpg

ACC
18th January 2011, 01:50 AM
You definitely want the widest tire possible, it will prove much more important than weight. I have 245/45/17's and they don't rub. Not sure if you can go wider. I would have if I knew they wouldn't rub.

Fahad_H
18th January 2011, 01:57 AM
You definitely want the widest tire possible, it will prove much more important than weight. I have 245/45/17's and they don't rub. Not sure if you can go wider. I would have if I knew they wouldn't rub.

245/45R17 seems like the way to go. Unfortunately my car is the one going. :(