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These two tire sizes will have slightly different outer diameter (and circumference) from your true stock tire size (see below).
Neither is the stock original size spec'd for 240 wagons.
But there are plenty 240 wagons running around on those size tires.
P185/75/R14 (offered tires).
185/70/R14 (your tires - size was spec'd for 240 sedans)
Check your passenger door for a tire size label.
The ones I've checked on 240 wagons say 185/R-14.
Tire size calculator (below) shows that 195/75/14 is a very close match for the original 185/R-14.
At the $100 price, the 185/75-14's would make sense unless you regularly load your car close to max and/or like to drive it hard in curves or braking.
Please see this site for a good comparison tire size calculator.
http://www.wickedbodies.net/Tire-Size-Calculator.htm
If you enter "R" it will calculate, substituting 82 as the value for "R".
My own research showed that 80 may be more accurate. You can enter 185/80-14 as your stock size. You will see that your current size and also the 185/75's will
give you some speedometer error. If you check load ratings on tires from TireRack you'll see that tires with correct OEM diameter (like 195/75-15) will have a load rating of 92, if I recall correctly.
87 is a load rating, "T" is a speed rating.
M+S = "Mud and Snow"; I think it designates an "all season" tire but I'm not certain.
For a good education on these see tirerack.com and look in the Tech section.
--
Sven: '89 245 NA, 951 ECU, expanded air dam, forward belly pan reaches oem belly pan, open-front airbox, E-fan, 205/65-15 at 50 psi, IPD sways, no a/c-p/s belt, E-Codes, amber front corner reflectors, quad horns, tach, small clock. Wifemobile '89 245
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