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R129 sl320 '99 / W201 190E '90
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Discussion Starter #1
according to manual 245 45 17 winter 95H otherwise 95W
Ok to use 99V or not or what?
hello thanks please
DArragh
 

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1999 SL500, 2004 CLK500, 2006 Cadillac SRX
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873 Posts
Tire Ratings Specs

I found this:

LI = Load Index, # = Pounds, Kg = Kilograms
LI # Kg
71 761 345
72 783 355
73 805 365
74 827 375
75 853 387
76 882 400
77 908 412
78 937 425
79 963 437
80 992 450
81 1019 462
82 1047 475
83 1074 487
84 1102 500
85 1135 515
86 1168 530
87 1201 545
88 1235 560
89 1279 580
90 1323 600
91 1356 615
92 1389 630
93 1433 650
94 1477 670
95 1521 690
96 1565 710
97 1609 730
98 1653 750
99 1709 775
100 1764 800
101 1819 825
102 1874 850
103 1929 875
104 1984 900
105 2039 925
106 2094 950
107 2149 975
108 2205 1000
109 2271 1030
110 2337 1060

The most common tire speed rating symbols, maximum speeds and typical applications are shown below:

L 75 mph 120 km/h Off-Road & Light Truck Tires
M 81 mph 130 km/h
N 87 mph 140km/h Temporary Spare Tires
P 93 mph 150 km/h
Q 99 mph 160 km/h Studless & Studdable Winter Tires
R 106 mph 170 km/h H.D. Light Truck Tires
S 112 mph 180 km/h Family Sedans & Vans
T 118 mph 190 km/h Family Sedans & Vans
U 124 mph 200 km/h
H 130 mph 210 km/h Sport Sedans & Coupes
V 149 mph 240 km/h Sport Sedans, Coupes & Sports Cars

So for winter tires, the ones you point to appear to exceed specs, but you can draw your own conclusions.
 

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R129 sl320 '99 / W201 190E '90
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1,016 Posts
Discussion Starter #3
thank you 560sec944
I deduce-
V means that I am not allowed drive as fast as W (but nearly).
99 means that the tyre wall is stronger and as it is capable of supporting the weight of my car plus more (up to the V speed).
I have been on 95H Winter - so in your humble opinion (all disclaimers accepted) do you feel it would be safe to wear 99V?
Regards
DArragh.
 

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2000 Obsidian Black Metallic Mercedes SL 320 V6
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4,527 Posts
thank you 560sec944
I deduce-
V means that I am not allowed drive as fast as W (but nearly).
99 means that the tyre wall is stronger and as it is capable of supporting the weight of my car plus more (up to the V speed).
I have been on 95H Winter - so in your humble opinion (all disclaimers accepted) do you feel it would be safe to wear 99V?
Regards
DArragh.
Hi darraghodonnell since the typical load index for the R129 is 95 and higher the number more the weight the tire can stand it's perfectly ok going for a tire that is rated with a load index of 99 as the tire is rated to stand more weight than what is advised for the R129.

In simple words, go for 245/45 17 LI 99. As for the V speed rate, you can use them but remember not to exceed a speed of 240 KPH (149 MPH).

Hope it helps.

Cheers.
 

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1997 SL500, 1948 Rover 75 P3, 1984 Citroen 2CV, 1953 BSA Bantam D1, 1966 Velosolex Moped
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1,141 Posts
thank you 560sec944
I deduce-
V means that I am not allowed drive as fast as W (but nearly).
99 means that the tyre wall is stronger and as it is capable of supporting the weight of my car plus more (up to the V speed).
I have been on 95H Winter - so in your humble opinion (all disclaimers accepted) do you feel it would be safe to wear 99V?
Regards
DArragh.
Just a thought Darragh, what sort of annual inspection to you have in Ireland? Might a SL fail if fitted with tyres of a lower rating than 155mph which is it's normally quoted (limited) top speed? I don't think promising the tester that you won't exceed a certain speed will get you very far ;). I think it's simply the vehicle's theoretical capability that matters even if you drive like a granny. (No offence meant to grannies :surrender:)

Regards
Steve
 

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2007 CLS 550, 1998 Harley Road King, 2011 F-150 EcoBoost, '65 Shelby Cobra
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978 Posts
Just a thought Darragh, what sort of annual inspection to you have in Ireland? Might a SL fail if fitted with tyres of a lower rating than 155mph which is it's normally quoted (limited) top speed? I don't think promising the tester that you won't exceed a certain speed will get you very far ;). I think it's simply the vehicle's theoretical capability that matters even if you drive like a granny. (No offence meant to grannies :surrender:)

Regards
Steve
Obviously, you never heard of The Little Old Lady from Pasadena!!!:cool:
 

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R129 sl320 '99 / W201 190E '90
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