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In my last post I said it was getting harder to find 14" rims, some of you suggested buying 15" rims because theres more selection wich there is. My question is what that gonna do to the calibration of the speedometer?
 

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How far are you from Raleigh ? I have a set of 14inch chrome bullet wheels if your interested send me a pm cause I'll let them go cheap and I have 3 oem rally wheels also .
 

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I did the same conversion. Did a little math and came up with the following chart:

Indicated Actual
25 26.785
30 32.142
35 37.5
40 42.857
45 48.214
50 53.571
55 58.928
60 64.285
65 69.642
70 75.000
75 80.357
80 85.714
 

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In my last post I said it was getting harder to find 14" rims, some of you suggested buying 15" rims because theres more selection wich there is. My question is what that gonna do to the calibration of the speedometer?
Absolutely nothing if the new wheel/tire combo is the same height as the originals
 

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Discussion Starter #6
Thanks for the chart, believe I'll stick to the 14", don't want to worry about the speed all the time. Ken
 

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My '86 has 15 inch rims on it, and the PO had to install a converter to make the speedometer anywhere close to accurate.
 

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Thanks for the chart, believe I'll stick to the 14", don't want to worry about the speed all the time. Ken
Just because you go to a bigger wheel does not mean you have to go to a taller tire.
Measure your old tires. Them buy new tires the same hight.
 

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for as long as you stick with the same tire height, the speedo won't be anymore inaccurate then usual...

I.E 205-60-14= 205-60-15

Good luck!:beer:
 

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captken i have a set of monte ss wheels with bfg comp t/a HR225/60/15/ i will make you a sweet deal on.:texas:
 

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I've got 265/50/14 rear and 245/50/14 front on my 1970 - very old school :smileyb:
 

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no one runs 14 anymore Whyyyyyyyyyyyy :poke:
Because they handle like giant marshmallows! Giant sidewalls make for plush rides... but sloppy turns.

But, the OP said about 14" wheels becoming harder to find... true if you're trying to buy new - I haven't seen new in 14" for years. I see at least 4 or 5 sets for various GM cars up for sale on craigslist all the time. Nobody wants them anymore.

But.... getting tires is becoming harder too, unless you're buying classic repop tires for that original look and feel like those that Coker sells. There's, what... 3 or 4 different model tires out there now? And they're all equally mediocre in performance. 16" stuff is all but gone, and even 17" is already showing signs of decline.
 
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