Sorry for my typo....correction being 800X15 (not 880!) -----Original Message----- From: cotejohnr@xxxxxxx To: c300@xxxxxxx; m.ostrowski@xxxxxxxx; chrysler300@xxxxxxxxxxxxxxx Cc: Lettercars@xxxxxxx Sent: Mon, 5 Nov 2007 8:15 am Subject: Re: [Chrysler300] Period correct tires Rich, Don't you mean that the P235/75/15 is closest to the 880X15!? (NOT the P225/75/15)? I think that the diameter is the most important dimension to match if your choosing a replacement radial. Also the radial design lets the car sit a little lower than a bias ply even though the overall diameter is the same or very close to the same. Been there, done that. John R. Cote Guilford, CT. -----Original Message----- From: Rich Barber <c300@xxxxxxx> To: 'MATTHEW OSTROWSKI' <m.ostrowski@xxxxxxxx>; 'Chrysler 300 group' <chrysler300@xxxxxxxxxxxxxxx> Cc: Gil Cunningham <Lettercars@xxxxxxx> Sent: Sun, 4 Nov 2007 9:13 pm Subject: RE: [Chrysler300] Period correct tires Matt: I have done some research on this issue with these findings: Load Tread Cross Outside Size Rating Width Section Diameter P225/75R15 1874# 6.30 8.80 28.30 P235/70R15 1896# 7.00 9.50 28.00 P235/75R15 2028# 6.60 9.30 28.90 8.00X15-Coker 1800# 4.75 8.30 29.08 8.00X15-General LR-B 5.35 8.30 29.10 J78X15 1860# 6.00 8.70 28.72 L78X15 (spec) 1970# 5.88 8.85 29.30 L78X15 (actual) 1970# 6.25 8.75 29.31 The General is a General Dual 90 available from Lucas Automotive. The L78X15 (actual) is a never used Remington bias-ply tire mounted on a 5.5" Motor Wheel wire-spoke Chrysler rim (mine). Once you commit to a radial tire, the size choice is yours. Several vendors offer these tires with the correct 3" WSW. The original tires were quite a bit narrower than the P-series radials or the J/L bias ply tires and perhaps a little bit taller. My conclusion is that the P225/75R15 comes the closest to the 8.00X15 dimensionally and may give you a 0.1" lower ride and a 3% speedometer error. Others that have actually purchased and used radial tires may have other guidance. I have been unable to find any original specifications for the Blue Streaks for comparison. I would be indebted to you if you would copy and transcribe all cast-in information, letters, numbers and symbols on your original spare, especially if it is a Goodyear Blue Streak. And, if you would measure the OD, cross-section width and tread width and remaining depth at 30 psi inflation pressure, I'd be doubly in debt. A digital picture of both sides would be great. And do preserve that old Blue Streak tire. They are like hens' teeth. I have heard that some members have been able to collect complete sets for their 300's. If our judges have specific guidelines on deductions for non-8.00X15 Blue Streak tires, that information would be of interest, also. C-300'ly, Rich Barber Brentwood, CA 1955 Chrysler C-300 -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of MATTHEW OSTROWSKI Sent: Sunday, November 04, 2007 5:05 PM To: Chrysler 300 group Subject: [Chrysler300] Period correct tires Hello 300 Members, I know we have discussed the tire issue, however I'm off to buy a set of four for my G. I want to get the correct size and look for the car. My "G" has what I believe is the original spare in the trunk. It is a Good Year 8.00 - 15 with a 3"whitewall. Is this correct in size/whitewall width for the car? Does this translate to a P235/75R15? Any source better than others? I appreciate your response. 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