Very cool! I think the stock tire is off, I got the same 175/65r14 in accordance with Tire rack, but that's smaller than it should be.
This is a good reference. (at least matches what I was told to be stock height) https://www.summitracing.com/parts/cok-512875/overview/
The problem I found was that for the 5.60-14 I found references from 22.96" diameter all the way up to 25.7"
I decided to use the Tirerack guideline based on reputation , If people have actually measured 5.60-14 please let me know what was the diameter and I will adjust the spreadsheet accordingly
Don't know why I didn't think of just measuring it lol.
My spare is a stock tire (I think) Toyo 5.60 S14
A little dusty from the garage, I tried my best to measure it but it bulges on the treads a little. Using 2 mixing sticks as straight as I could get them I got Just a hair under 24" Anyone know a proper way to measure this?
For measuring height, put wheel on floor against a wall, use paint stick or better yet a level across the top of the treads, measure from floor to level.
Least, that's how I would do it. YMMV
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.
You could just push the tire up against a wall as mentioned and put your tape measure under it and then use your paint stick. Even if it's not exact it won't matter much because your going to have to compensate for tread ware.
Mike M
Old enough to know better, too old to remember why!
1969 2000 solex mine since 1972, under resurrection. (Finally resurrected as of spring 2019!)
1969 Porsche 911s -worth more, but not as valuable! Gone!
2017 Lotus Evora 400 - Oh my!!
Alex thanks for the measurement
here's an update version with the right size for stock
I added a few sizes including 13"s and highlighted the popular sizes people seem to be taking most of the time
Tires 2.JPG
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notoptoy wrote: Mon Jan 28, 2019 10:42 pm
For measuring height, put wheel on floor against a wall, use paint stick or better yet a level across the top of the treads, measure from floor to level.
Least, that's how I would do it. YMMV
Why not just take a flexible tape measure or some sort of wire, measure the circumference and divide by pi. No need to worry about getting paint sticks or whatever perpendicular that way.
1969 SRL311 (resto project)
2013 Golf R (hers)
2014 Corvette
2015 SS (daily, Holden-mode)
Using math would be too incredibly difficult for me! Takes me back to horror stories of grade school. But seriously, what an insanely simple idea! And who can’t remember that Pi is 3.14159265359……
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.
All of that is great, but it doesn't consider the effective laden diameter. Radials tend to "bulge" more at the bottom reducing the effective laden diameter slightly over a similarly sized bias ply. Also, consider that different brands have different actual dimensions for the same tire size. Just food for thought.
Here is an updated photo with new tires. 185/65 falkens with Michael Young front springs and Bilsteins front and rear and ~ 1 inch lowering blocks in rear. 70’s appliance alloy wheels. Fronts were turned down 1/4†on a lathe to fit inside the fender wells better.
Oh yes, and if you get your wheels turned to change offset to fit better. Be sure to check those balancing weights on the inside! Mine caught and rubbed a bit on the brake line. Took a while to determine the cause of the sound
image1.jpeg
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Last edited by msampsel on Tue Feb 19, 2019 7:12 am, edited 3 times in total.
67 1600 (Mods only a mother could love)
78 911 SC Targa (Severe Oversteer but still loved)
