Nedavno Raybender pise:
| Are you sure of this weight? When I look up E30 sites I found weight
| listed as 2600 - 2700 lbs.
It's in whiechle registration card.
| The last two digits represent load rating (84 = 1102 lbs or 500 kg)
| and the letter represents the speed rating. T = 190 km/hr H = 210
| I agree, strange that your 185 tires are not listed. What is also
| strange to me is when I look up specs for these tire sizes (on
| tirerack.com) there is quite a bit of variation. Some tires have max
| pressure of only 35 psi, some have max of 44 psi for the same size
| and load rating, for example. Another guess would be that tires have
| changed significantly since your car was built and that placard stuck
| on the door - maybe the 185/65 size was not available in 1987?
I too was thinking that that may be the reason.
| Also, | load ratings for the same tire sizes apparently have changed
| - Your placard most likely assumes a load rating of 8402 lbs, but
| your tires actually have a rating of 1170. Makes a difference. If
| we use the original spec (back in 1987?) for a load range 84 tire of
| 1102 lbs, the footprint drops to
| 1102/44 = 25 square inches - 1.5 inches smaller, so calculated
| pressure goes up.
Yes, with load range 84 (1102 lbs) it's:
FTP = (650 + 75) / 25 = 29
RTP = (650 + 75 + 125) /
25 = 34 psi
and that is about right for front tire, and slightly higher for rear.
But, as you noted, there might be difference in max allowed load
pressure for the tire now and in '87.
| > | 4. Does your manual give the rated max load for your car?
| > Yes, 2300 lbs at partial load, and 3500 lbs at max load.
| VERY IMPORTANT. I don't quite understand here. 2300 lbs includes
| weight of car + partial load, and then 1200 MORE lbs can be added for
| max load? I really don't think this is correct.
I made mistake here. 2300 lbs empty, 3500 lbs max load. English is not
my native language, so my concentration is not at top all the time, as
I am trying to find adequate words to express myself.
| My E36 BMW has a max load of only 970 lbs. If weight of your car
| is 3500 lbs at max load, then subtracting a more reasonable 900 lbs
| of load we end up with car weight of 2600 lbs - matching the number I
| found for E30 weight.
I am from Serbia & Montenegro, and back in '87 customs and taxes
combined for import cars up to 1.6 litre 87% (250 above 1.6 litre -
hard to believe isn't it), so BMW striped cars to it's bare minimum, and
fitted E21 1.6 litre engine in it - rest of the world had 1.8 litre in
316 as a start engine. So data that can be found at Internet may not be
correct for my car (I thing BMW had the same engine for Greece too).
| So, it looks like we are now really pretty close.
It's getting there.
| Isn't this fun? I suppose some people would say we should get a
| real life, but then what do they know?
/__/ / \ ** Registrovani korisnik Linuksa #291606 **
Click to see the full signature.