Sorry I did not finish the thought - If you are looking at Radials, best bet is P235/75R14 unless you are able to switch to 15 inch wheels where there are lots more tires in the right size range. Not much left bigger than P215/75R14 (or equivalent P225/70R14 if you prefer 70 series) which are equivalent interchange to the old 8.00-14 which would be small for a 300D. On 5/25/2011 4:59 PM, Edward Mills Antique Tractors wrote: > Books I have say 9.00-14 which would have been somewhere around 28.40 > to 28.80 inches dia inflated with a Static Loaded Radius of 13.10 to > 13.26 inches (from center of wheel to ground) and would have turned > between 754 and 745 rev per mile. Tread Widths varied from 4.93 inches > to 5.09 inches. Max Load was 1355 pounds at 32 psi > > The differences in numbers is 2 different tire specifications circa > 1960 for 9.00-14 mounted on 6 inch wheels. > > Interesting that the Section Width on 6 inch wheels was only 8.25 > inches and on 6.5 inch wheels, it was 8.45 inches (215 mm). In theory > the 9.00 was the Section Width and the Section Height was 80% or 7.2 > inches giving a theorectical diameter of 28.4 inches. > > For more info - see > http://www.oldcarmanualproject.com/catalogs/Goodyear%20Tires/1960%20Engineering%20Data/index.htm > > Hope that helps - if you are looking at radials, > > On 5/25/2011 4:39 PM, Larry Jabin wrote: >> >> Could someone tell me what the original tire diameter was for a 1958 >> 300D with bias ply tires? >> >> Thanks >> >> Larry Jabin >> >> Larry@xxxxxxxxxx >> <mailto:Larry%40pwbsfo.com><mailto:L.jabin1007@xxxxxxxxxx >> <mailto:L.jabin1007%40pwbsfo.com>> >> >> [Non-text portions of this message have been removed] >> >> [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/