Tyre Speed Rating

Richard52 · 10-15-2016, 06:00 PM

Should a 2014 328i have tyres with a speed rating of R - 106 mph.

eluded · 10-15-2016, 09:02 PM

Not if your going to do triple digits

Billfitz · 10-15-2016, 09:54 PM

Stock, at least in the US, was H. In the US R tires are generally used on light trucks, with S being the minimum rating on family cars, so if you have R they're probably replacements, and might not meet your needs for more than just speed reasons. It's not unusual for other than BMW dealers to re-shod a used BMW for sale with sub-standard/cheap tires.

brissim · 10-15-2016, 10:34 PM

Check what your local laws are but certainly here in Australia that would be illegal to fit a R-speed rated tyre to a passenger car and would void any insurance in the event of any accident because you are not "maintaining your car in a roadworthy condition". Minimum allowed speed rating here for a passenger car is S or 180km/h (112 mph).

Tony

Richard52 · 10-15-2016, 10:41 PM

Should have said that I am in the UK and the car was bought from a BMW main dealer. Very odd. .

floydarogers · 10-16-2016, 12:51 AM

Quote:

Originally Posted by Richard52

Should have said that I am in the UK and the car was bought from a BMW main dealer. Very odd. .

Perhaps you're confusing the tire construction "R" from the speed rating "R". The "R" in "225/40R17" specifies Radial construction. If it has an "R" (106 mph) speed rating, it would be the very last letter in the description: xxx/yyRdd 91R

See http://www.tirerack.com/tires/tirete....jsp?techid=46 and follow the links.

goj · 10-16-2016, 11:12 AM

BMW usually sells decent tires but they are really expensive for what they are. If you got it from a dealer I bet they're just fine

spuntyb · 10-16-2016, 05:04 PM

Quote:

Originally Posted by floydarogers

Quote:

Originally Posted by Richard52

Should have said that I am in the UK and the car was bought from a BMW main dealer. Very odd. .

Perhaps you're confusing the tire construction "R" from the speed rating "R". The "R" in "225/40R17" specifies Radial construction. If it has an "R" (106 mph) speed rating, it would be the very last letter in the description: xxx/yyRdd 91R

See http://www.tirerack.com/tires/tirete....jsp?techid=46 and follow the links.

+1

Double check that you aren't looking at the reinforcement ply type. Anything in the US will be R.

10-15-2016, 06:00 PM	#1
Richard52 Private First Class 14 Rep 101 Posts Drives: F30 328i AT Join Date: Aug 2015 Location: Manchester iTrader: (0)	Tyre Speed Rating Should a 2014 328i have tyres with a speed rating of R - 106 mph.
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10-15-2016, 09:02 PM	#2
eluded 2JZ-GTE 3137 Rep 4,105 Posts Drives: 340 6MT, 50e, others Join Date: Nov 2015 Location: Sofia iTrader: (0)	Not if your going to do triple digits __________________ A man who views the world the same at 50 as he did at 20 has wasted 30 years of his life.
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10-15-2016, 09:54 PM	#3
Billfitz Lieutenant General 8621 Rep 16,674 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Stock, at least in the US, was H. In the US R tires are generally used on light trucks, with S being the minimum rating on family cars, so if you have R they're probably replacements, and might not meet your needs for more than just speed reasons. It's not unusual for other than BMW dealers to re-shod a used BMW for sale with sub-standard/cheap tires.
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10-15-2016, 10:34 PM	#4
brissim Lieutenant 86 Rep 510 Posts Drives: X3 30d (2011 F25) - now sold Join Date: Jul 2011 Location: Brisbane, Australia iTrader: (0)	Check what your local laws are but certainly here in Australia that would be illegal to fit a R-speed rated tyre to a passenger car and would void any insurance in the event of any accident because you are not "maintaining your car in a roadworthy condition". Minimum allowed speed rating here for a passenger car is S or 180km/h (112 mph). Tony
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10-15-2016, 10:41 PM	#5
Richard52 Private First Class 14 Rep 101 Posts Drives: F30 328i AT Join Date: Aug 2015 Location: Manchester iTrader: (0)	Should have said that I am in the UK and the car was bought from a BMW main dealer. Very odd. .
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10-16-2016, 11:12 AM	#7
goj Brigadier General 2252 Rep 3,622 Posts Drives: 2016 EBII 340i 6-MT Join Date: Aug 2015 Location: Bay Area, CA iTrader: (0)	BMW usually sells decent tires but they are really expensive for what they are. If you got it from a dealer I bet they're just fine __________________ BMW CCA Member #516012 2016 340i, Estoril Blue, Manual Transmission, MPE, MPBBK, HRE FF04 Instagram: @brandons340i
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