When out shopping for tyres yesterday, I came across a pair of 175x60x13's
These have a nominal OD of 540mm & are legal on rims from 4-1/2" to 7"

These will help get your ride down in the weeds.

Compare this to the 552mm to 554mm diameter of
5:50x12 [original cross ply for 1000]
155x12R [Radial option for 1200]
185x60x13 [common size for mags on small Datsuns]

or the 575mm diameter of
600x12 [original cross ply size for 1200]
205x60x13 [The size I use on the rear of my 1000 & 1200]

There are TWO ONLY.


EDIT
SOLD

My tyre guy says these are still popular
And that he would fit them to 7" rims


They are still out there people... if you know where to look

205/60/13's are too balloony for a b10 or b110 imo

baloony tyre pics:

205/60 on 13*7" flared B110

205/60 on 13*6" B110

205/60 on 13*7" bolt on flares B110

from a performance perspective, 195-215 is about ideal width for a 7" rim. any wider or narower is a bit of a compromise for handling. stretched tyres will wear the outside edge excessively too if driven hard, and risk popping off the bead in hard cornering and risks of sidewall damage and rim damage goes up too.

The seller originally had four of the 175's & I bought two at $40 each. I figured that I would see how they look on my 5" Watinabe's on the front of my KB10, instead of 185's, & if they looked OK, then I might use 195x60x13 on the rear instead of the 205's I had been using on my sedan for many years.
At 564mm diameter, they are halfway between the 185's I had been using on the front & the 205's I had been using on the rear.

The design rim width for the 175's is 5" which is what I have for the front, & for the 195's [& 205's] the design rim width is 5-1/2" which is what I have for the rear.

Time will tell if the $80 for the 175's was spent wisely, or foolishly.

Personally I like a little bit of sidewall 'bag' as it adds a measure of ride comfort to my 'strictly street' Datsuns & the 'overstretched' Jap look just leaves me cold.

i meant without flares of course. this racecar runs 205/60 r13:

damn, i was interested tilli saw sold :(

if possible can you pm m e the brand and spec of the tyre to see if i can find 2.

i have 2 165 55 r13 for the front and they are ok for up to 6 inch. need two wider ones for rear wheels.

Wow. I got all excited and tried to access the classicdatsunracing (dot) com web site. It says that it has bee deactivated.

misspelled url

diameter comparison:

155/70/12 = 20.54" or 522mm
165/70/12 = 21.09" or 535mm

175/60/13 = 21.26" or 540mm
185/60/13 = 21.74" or 552mm
205/60/13 = 22.68" or 575mm (balloonies)

195/45/15 = 21.90" or 556mm

what does this mean? that few people realize (or care) that their speedos are inaccurate

yes thats right... no body cares propbably cause after 30years they arent that accurate anyway