Please help--wheel fitment question. (19", 9" wide, +47mm)
#16
07-23-2010, 07:25 AM
Since you brought up winter. Just something to keep in mind, narrower tires tend to work better in snow.
#17
07-23-2010, 10:52 AM
To address these two points.
- Aesthetics-wise, it's subjective. Some aftermarket wheels look worse than the OEM, even if they are larger. But generally, the larger wheels will change the look of the vehicle. A thing to note is that in certain cases, larger wheels also tend to make cars look like they're jacked-up (i.e. high off the ground).
- Again, generally speaking, wider wheels have a bit more bias to extend inwards, thus the need for lower offsets to bring it out more. 9" wide wheels, at 47mm offset should be fine, but the inner rim will be a bit closer to the suspension components. It's not as bad as it sounds, however.
- As for speedo correction, not all tires are made the same. Those calculators are general guidelines, and in almost all cases is good enough to follow. But if you're really that concerned about being a few points off, i suggest checking the specs of the tire you currently have against the new one (taking into account the width of wheels they were measured against since that, too, changes the height of the tires somewhat.)
- Aesthetics-wise, it's subjective. Some aftermarket wheels look worse than the OEM, even if they are larger. But generally, the larger wheels will change the look of the vehicle. A thing to note is that in certain cases, larger wheels also tend to make cars look like they're jacked-up (i.e. high off the ground).
- Again, generally speaking, wider wheels have a bit more bias to extend inwards, thus the need for lower offsets to bring it out more. 9" wide wheels, at 47mm offset should be fine, but the inner rim will be a bit closer to the suspension components. It's not as bad as it sounds, however.
- As for speedo correction, not all tires are made the same. Those calculators are general guidelines, and in almost all cases is good enough to follow. But if you're really that concerned about being a few points off, i suggest checking the specs of the tire you currently have against the new one (taking into account the width of wheels they were measured against since that, too, changes the height of the tires somewhat.)
1) large wheels making the car look higher is just an illusion, since the diameter is the same, right?
2)If the inner rim is closer to the suspension components--is there any downside? Any possibility of warranty issues?
3) I'm not really sure what you meant by the last point--but it seems that 245/40/19 tires should be OK according to the calc.
Here's a picture of a car with the same wheels:
https://g35driver.com/forums/media-s...ls-my-car.html
Not sure if it's dropped but I think it looks cool
. This is making me a bit nervous dropping so much cash on wheels lol. I kinda wish there was someone in my area that could let me fit test them 
.
#18
07-23-2010, 12:37 PM
Welcome. 
1. It's merely an illusion. Nothing to worry about there.
2. Somewhat, if it's ridiculously close to the suspension components then things start rubbing and clunking. However, the size you've chosen, especially without a drop, is rather conservative. Dealerships will be hard-pressed to find a reason to deny you warranty coverage. (Then again, with a lot of dealerships, one is guilty unless proven innocent... sad as it sounds).
3. Tires run large, exact or small. They may be rated, say 245/40/19, but different brands and models will have very slightly different overall diameters. This is why there's that accepted margin of error (usually 3%).
Those 370z's will look great!
1. It's merely an illusion. Nothing to worry about there.
2. Somewhat, if it's ridiculously close to the suspension components then things start rubbing and clunking. However, the size you've chosen, especially without a drop, is rather conservative. Dealerships will be hard-pressed to find a reason to deny you warranty coverage. (Then again, with a lot of dealerships, one is guilty unless proven innocent... sad as it sounds).
3. Tires run large, exact or small. They may be rated, say 245/40/19, but different brands and models will have very slightly different overall diameters. This is why there's that accepted margin of error (usually 3%).
Those 370z's will look great!
#20
07-23-2010, 12:55 PM
Welcome.
2. Somewhat, if it's ridiculously close to the suspension components then things start rubbing and clunking. However, the size you've chosen, especially without a drop, is rather conservative. Dealerships will be hard-pressed to find a reason to deny you warranty coverage. (Then again, with a lot of dealerships, one is guilty unless proven innocent... sad as it sounds).
Those 370z's will look great!
2. Somewhat, if it's ridiculously close to the suspension components then things start rubbing and clunking. However, the size you've chosen, especially without a drop, is rather conservative. Dealerships will be hard-pressed to find a reason to deny you warranty coverage. (Then again, with a lot of dealerships, one is guilty unless proven innocent... sad as it sounds).
Those 370z's will look great!
#21
07-23-2010, 12:58 PM
#22
07-23-2010, 05:25 PM
Hmm...the warranty thing is very worrying. I really know nothing about car mechanics so I am a bit nervous doing something that may screw me over long-term. Is there a way to ensure they don't rub/clunk? I don't know if I will even realize if it's rubbing/clunking unless it's super obvious.
Seriously though, i doubt what you're planning to do will damage or even affect anything.
I just mentioned the warranty issue because some dealerships will try to get out of anything warranty-related even if something is a legitimate warranty-covered issue.
#23
07-23-2010, 05:42 PM
You should be fine with those offsets.
I was the same as you a few months ago...somewhat nervous to go forward because things wouldnt work out. Listen to what everyone is telling you. Most likely someone on here has already done it, or tried it. You will learn a lot quickly...I know I have.
#24
07-23-2010, 06:31 PM
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