Recalibrating Speedo after wheel changes...
11-13-2008, 07:27 PM
#1
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Recalibrating Speedo after wheel changes... Do you need to do this when you put 17x11s in the back ? Im running 285/40/17s
How do you know when to do this ?
How do you know when to do this ?
11-14-2008, 01:06 PM
#7
Therefore the slight width adjustment would create a slight height adjustment as well. That's what my tire guy has told me.
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11-14-2008, 03:02 PM
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I see what you're saying, but I believe the 40 is a percentage of the 285 or 275 or any other width. I almost want to say that it's 40%, but i'm not quite sure.
Therefore the slight width adjustment would create a slight height adjustment as well. That's what my tire guy has told me.
Therefore the slight width adjustment would create a slight height adjustment as well. That's what my tire guy has told me.
11-14-2008, 05:46 PM
#9
I see what you're saying, but I believe the 40 is a percentage of the 285 or 275 or any other width. I almost want to say that it's 40%, but i'm not quite sure.
Therefore the slight width adjustment would create a slight height adjustment as well. That's what my tire guy has told me.
Therefore the slight width adjustment would create a slight height adjustment as well. That's what my tire guy has told me.
11-15-2008, 06:44 PM
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GSD3s are wide but I would think thats still a stretch.
But if you do decide to go the 285 route you will not have to recalibrate your speedo.
FYI: For a 285-40-17
285 = width in millimeters (duh)
40 = aspect ratio (sidewall is 40% as large as the width)
17 = rim diameter (another duh)
Stock Tire Diameter = 25.661"
285-40-17 = 25.976"
.3" will not effect your computer enough to cause any kind of problem.
But if you do decide to go the 285 route you will not have to recalibrate your speedo.
FYI: For a 285-40-17
285 = width in millimeters (duh)
40 = aspect ratio (sidewall is 40% as large as the width)
17 = rim diameter (another duh)
Stock Tire Diameter = 25.661"
285-40-17 = 25.976"
.3" will not effect your computer enough to cause any kind of problem.
11-16-2008, 03:04 AM
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I been running them since November of 06 and I have put alot of miles on them, to the point I cant accurately tell you how many and never had a problem.
11-18-2008, 05:12 PM
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I'd still put 315's on them...that's what I have on my 11's....isn't that the whole point of getting 11's?
It doesn't matter that you haven't had any trouble so far, eventhough it's been quite a while already, but you should really follow a tire manufacturers advice and follow their suggestions for wheel width. Just because nothing has happened so far doesn't mean it's safe to use tires that small on a wheel that wide. I'd definitely upgrade to 315s dude.
But yeah, to answer your question, you won't have to worry about the increased tire height of the 285s when it comes to your speedo.
It doesn't matter that you haven't had any trouble so far, eventhough it's been quite a while already, but you should really follow a tire manufacturers advice and follow their suggestions for wheel width. Just because nothing has happened so far doesn't mean it's safe to use tires that small on a wheel that wide. I'd definitely upgrade to 315s dude.
But yeah, to answer your question, you won't have to worry about the increased tire height of the 285s when it comes to your speedo.
11-19-2008, 08:30 AM
#16
For a 11" wide wheel you need a 315 to fit properly. Now if the tire runs a little wider maybe a 305 in this specific tire would be very close to some 315's but a 285 isn't even close.
11-19-2008, 10:39 AM
#17
Good grief people do your research before you spew so much misinformation . . .
A 285/40ZR17 will fit a 9.5" to a 11" wide wheel . . . PER THE MANUFACTURERS!
Therefore is it PERFECTLY safe and acceptable to do it . . .
A 285/40ZR17 is 26" tall vrs a 275/40ZR17 at 25.7" tall . . . the difference is negligable, so I really see no point in spendning the money to reprogram the speedo . . .
A 285/40ZR17 will fit a 9.5" to a 11" wide wheel . . . PER THE MANUFACTURERS!
Therefore is it PERFECTLY safe and acceptable to do it . . .
A 285/40ZR17 is 26" tall vrs a 275/40ZR17 at 25.7" tall . . . the difference is negligable, so I really see no point in spendning the money to reprogram the speedo . . .
11-19-2008, 11:49 PM
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Xsta Z 28,
I was just wondering at what point you need to recalibrate. Thats all.
And yes, the 285 tire is fine on an 11 inch rim. I might have to take some pictures and show you guys the fitment.
I was just wondering at what point you need to recalibrate. Thats all.
And yes, the 285 tire is fine on an 11 inch rim. I might have to take some pictures and show you guys the fitment.