The "+45" lightweight wheel thread
#44
02-20-2009, 09:35 AM
whatis the width of the wheels you know???? like x5 x6 or x7 I dought they are x8
#46
02-20-2009, 09:50 AM
O my bad I forgot to ask what size tires to. So I am guessing nobody makes a +55 wheel in a 16 17, 4x100 definatly not under 18lbs huh??? is +55 the stock fit sport wheel offset??? cause I want to run a 16 or 17on my ground controls springs all the way down and not have it rub but I want want to wheels to be lighter than stock to, but I am guessing thats to much to ask is it????
No rubbing+slammed+stock+55 offset= impossible???
Or is it???
No rubbing+slammed+stock+55 offset= impossible???
Or is it???
#47
02-20-2009, 10:18 AM
Spring set up is Photoshop CS4.
The width is 6.5 but I have seen guys go pretty low with the HFP wheels and not have a problem with rubbing. I haven't found any aftermarket wheels with the HFP offset.
#48
02-20-2009, 12:06 PM
Join Date: May 2007
Location: Calgary, Alberta
Posts: 4,997
^^^ Enkei SC05's are pretty close.... +50 offset
#50
03-17-2009, 02:31 PM
Join Date: May 2007
Location: Calgary, Alberta
Posts: 4,997
I just found a motherlode of 15" and 16" rims available at +45 offset. The company is called Team Dynamics and they make competition and appearance rims, cast and forged. It appears as though they make them to order so you can specify your offset.
Here is their home page.
My buddies at Susquehanna Motorsports sell them on their website.
The Pro Race 1 wheel is available in 15x7 +45 and is touted as being the lightest cast/heat treated competition wheel available. Dunno the exact weight for each size but they start at 13 lbs and go up from there.
Pro Race 2 is available in 16x7 +45 (15.4 lbs).
The Rally 1 wheel in 15x7 +45 weighs 18.7 lbs but then they're designed to be used on gravel rally stages.
There are a bunch of tuner rims too but I didn't spend much time looking at them.
Here is their home page.
My buddies at Susquehanna Motorsports sell them on their website.
The Pro Race 1 wheel is available in 15x7 +45 and is touted as being the lightest cast/heat treated competition wheel available. Dunno the exact weight for each size but they start at 13 lbs and go up from there.
Pro Race 2 is available in 16x7 +45 (15.4 lbs).
The Rally 1 wheel in 15x7 +45 weighs 18.7 lbs but then they're designed to be used on gravel rally stages.
There are a bunch of tuner rims too but I didn't spend much time looking at them.
Wow, looking at the web site I would guess they do a lot of custom in-house work. Looks expensive!
Last edited by Sugarphreak; 03-17-2009 at 02:42 PM.
#52
03-20-2009, 04:08 AM
so with a 42 offset on a 17x7 rim I would get some rubbing with a light drop? That sucks balls. I was gonna test fit my RoJa LT5s since they are 14.5lbs/wheel for 17x7. I was hoping they just might clear. Now I dont wanna mess with it.
#53
03-20-2009, 07:43 AM
There is a good chance you will get away with it if you use 195/40x17 tires. There aree sweveral good choices.
#54
03-20-2009, 10:03 AM
wouldn't wanna go smaller than stock because odometer will read higher. I am only down 1.5" on H&R sports, which is a moderate drop, nothin crazy.
#55
03-20-2009, 10:34 AM
Join Date: May 2007
Location: Calgary, Alberta
Posts: 4,997
With a +42 or even +45 offset 17" rim I would reccomend 195/40's to avoid rubbing. If you go with a 205 just be careful about the brand, some brands follow the theoretical sizes more carefully than others. Because the DOT regulations (also Transport Canada regulations) allow up to a 7.5% variance a lot of cheaper companies will just rebrand a 215 wide tire as a 205. I had just this problem with Lexani brand tires. BF Goodrich & Falken have a reputation for tires that are a bit smaller than others for the same size.
as far as size size goes, usually 2-3% is acceptable.
Stock (theoretical) diameter comparison ref chart:
Width/Aspect/Rim Size = Diameter (percent compared to stock)
195/55/R15 = 23.44" Dia (stock)
205/50/R15 = 23.07" Dia (98.4%)
205/55/R15 = 23.88" Dia (101.9%)
215/50/R15 = 23.45" Dia (100.1%)
195/45/R16 = 22.91" Dia (97.7%)
195/50/R16 = 23.68" Dia (101.0%)
205/45/R16 = 23.26" Dia (99.2%)
205/50/R16 = 24.07" Dia (102.7%)
195/40/R17 = 23.14" Dia (98.7%)
195/45/R17 = 23.91" Dia (102.0%)
205/40/R17 = 23.46" Dia (100.1%)
205/45/R17 = 24.26" Dia (103.5%)
215/40/R17 = 23.77" Dia (101.4%)
215/45/R17 = 24.62" Dia (105.0%)
Last edited by Sugarphreak; 03-20-2009 at 05:21 PM.
#56
03-20-2009, 11:28 AM
That chart is messed up.
How is a 195/45/17 bigger than a 205/45/17? physical impossibility if you do the math
How is a 195/45/17 bigger than a 205/45/17? physical impossibility if you do the math
#57
03-20-2009, 12:22 PM
195/40x17 tire is 23.14" tall while stock 185/55x16 is 24.01 and a stock 195/55x15 is 23.44". The odo error for the 195/40x17 tire comopared to 08 tire is 1% or 10 miles per 1000. Compared to the 09 the error is 3.7%, or 37 miles per 1000. On a 3 year lease limited to 36,000 miles its 360 to 1332 miles. You'll get it back with increased mpg.
To check tire diameters use this formula
(section width x 2 x aspect ratio/2540 ) + wheel diameter.
For a 195/45x17:
(195 x 2 x 45 / 2540) plus 17 + 23.90"
For a 205/40x17:
(205 x 2 x 40/ 2540) plus 17 = 23.45"
and a 195/45x17 tire is bigger but not wider than a 205/40x17.
#59
03-20-2009, 01:46 PM
195/40x17 tire is 23.14" tall while stock 185/55x16 is 24.01 and a stock 195/55x15 is 23.44". The odo error for the 195/40x17 tire comopared to 08 tire is 1% or 10 miles per 1000. Compared to the 09 the error is 3.7%, or 37 miles per 1000. On a 3 year lease limited to 36,000 miles its 360 to 1332 miles. You'll get it back with increased mpg.
To check tire diameters use this formula
(section width x 2 x aspect ratio/2540 ) + wheel diameter.
For a 195/45x17:
(195 x 2 x 45 / 2540) plus 17 + 23.90"
For a 205/40x17:
(205 x 2 x 40/ 2540) plus 17 = 23.45"
and a 195/45x17 tire is bigger but not wider than a 205/40x17.
To check tire diameters use this formula
(section width x 2 x aspect ratio/2540 ) + wheel diameter.
For a 195/45x17:
(195 x 2 x 45 / 2540) plus 17 + 23.90"
For a 205/40x17:
(205 x 2 x 40/ 2540) plus 17 = 23.45"
and a 195/45x17 tire is bigger but not wider than a 205/40x17.
But on the chart that was posted, it shows a 195/45/17 is larger diameter than a 205/45/17, which is impossible.
And I never run lower than a 45 series tire, I need more sidewall. My 17s with BFG Gforce 225/45/17s are lighter than OEM fit wheel and tire. But with 42 offset no way in hell am I gonna clear an oversized tire unless I raise it back to stock height.
I cannot stress how bad the roads are where I am at, they are ranked the worst in California. I don't ride my racebike as much because the roads can grab your tire and totally change your direction, or swallow your front wheel and you go ass-over-tea-kettle. there have been quite a few accidents due to it. I have bent a lot of rims, don't think I am gonna even try to mess up my nice rims with a tiny sidewall tire, no matter how cool it would look on the fit.
#60
03-20-2009, 05:22 PM
Join Date: May 2007
Location: Calgary, Alberta
Posts: 4,997
The percentages are correct
I know how it works, I have worked the car biz my whole life. I put a lot of miles on the fit, 22k in the first 9 months of owenership. if anything I would want to oversize to have the odometer read slower miles and have a lower RPM on the freeway.
But on the chart that was posted, it shows a 195/45/17 is larger diameter than a 205/45/17, which is impossible.
And I never run lower than a 45 series tire, I need more sidewall. My 17s with BFG Gforce 225/45/17s are lighter than OEM fit wheel and tire. But with 42 offset no way in hell am I gonna clear an oversized tire unless I raise it back to stock height.
I cannot stress how bad the roads are where I am at, they are ranked the worst in California. I don't ride my racebike as much because the roads can grab your tire and totally change your direction, or swallow your front wheel and you go ass-over-tea-kettle. there have been quite a few accidents due to it. I have bent a lot of rims, don't think I am gonna even try to mess up my nice rims with a tiny sidewall tire, no matter how cool it would look on the fit.
But on the chart that was posted, it shows a 195/45/17 is larger diameter than a 205/45/17, which is impossible.
And I never run lower than a 45 series tire, I need more sidewall. My 17s with BFG Gforce 225/45/17s are lighter than OEM fit wheel and tire. But with 42 offset no way in hell am I gonna clear an oversized tire unless I raise it back to stock height.
I cannot stress how bad the roads are where I am at, they are ranked the worst in California. I don't ride my racebike as much because the roads can grab your tire and totally change your direction, or swallow your front wheel and you go ass-over-tea-kettle. there have been quite a few accidents due to it. I have bent a lot of rims, don't think I am gonna even try to mess up my nice rims with a tiny sidewall tire, no matter how cool it would look on the fit.
A 225 17" tire will probably rub even with a +45 wheel.
Last edited by Sugarphreak; 03-20-2009 at 05:26 PM.