Demonstration of how much tire sizes can very

loesch · 04-16-2015, 10:54 PM

You'll sometimes see people say that a tire runs wide. Well, what does that mean? Most of us want to know what the widest tire is that we can fit without rubbing. You can't look only at the number embossed on the side of the tire. Manufacturers must have almost no oversight in the specifications they publish for their tires. Kind of scary. I took this picture the day my new tires got mounted. The tread width as listed on the Federal Web site is 9.3in. for a 255x35 18. Tirerack.com has the tread width of the 255x35 18 Continental ExtremeContact DW listed as 9.5in. See anything wrong there?

Left: 255x35 18 Continental ExtremeContact DW, Right: 255X35 18 Federal 595RS-R

ilikebmxbikes · 04-16-2015, 11:59 PM

Tires can vary a lot. I run 265/275/35/18 r888 which run as wide as 275/285/35/18 r-s3.

Kgolf31 · 04-17-2015, 03:12 PM

Basic rule of thumb (and very rough one).

Any high performance street tire (ie RS3, ZII*, Rival, RE71R) add 10mm for comparison length

Any R-Comp, add 20mm to equate to a typical street tire

l2iceman · 04-17-2015, 03:29 PM

I'm looking at nankang ns2r, if I am planning to get their 235/40/17, would that be really wide? If so I would go with 225 if it'll run as wide as a 235 high performance tire.

wjk_glynn · 04-18-2015, 10:27 AM

Quote:

Originally Posted by Kgolf31

Basic rule of thumb...

I wonder if there's a site that lists actual tire widths by manufacturer/model/size?

I haven't come across one...

Karl.

cbl117 · 04-25-2015, 10:20 AM

Golf, is the RE71R the new bridgestone offering that replaces the RE11?

Kgolf31 · 04-25-2015, 11:56 AM

Quote:

Originally Posted by cbl117

Golf, is the RE71R the new bridgestone offering that replaces the RE11?

Correct. The RE71R is, IMO, the best street tire on the market now.

andrey_gta · 04-25-2015, 12:53 PM

Quote:

Originally Posted by Kgolf31

Correct. The RE71R is, IMO, the best street tire on the market now.

How does this compare to the Dunlop ZI star spec or the new ZII star spec. They get high praise and were a typical more serious street tire to the PSS

cbl117 · 04-25-2015, 03:29 PM

Quote:

Originally Posted by Kgolf31

Correct. The RE71R is, IMO, the best street tire on the market now.

I remember you recommending it to me

. I'm down to the tread wear bars so I'll be picking them up in the next few weeks.

Kgolf31 · 04-25-2015, 06:28 PM

Quote:

Originally Posted by andrey_gta

How does this compare to the Dunlop ZI star spec or the new ZII star spec. They get high praise and were a typical more serious street tire to the PSS

Quote:

Originally Posted by cbl117

I remember you recommending it to me

. I'm down to the tread wear bars so I'll be picking them up in the next few weeks.

On a 30 second autocross test course people have been easily 0.4 - 0.7 seconds faster by just bolting those tires on.

Mine should be here within a couple weeks. Im going to try and do a comparison against my RS3v2s

Gary@TireRack · 04-27-2015, 08:35 AM

Are both of those tires mounted on wheels?

loesch · 04-27-2015, 08:48 AM

The Continental's on the left were mounted on 9.5in wheels.

nismo · 04-28-2015, 04:26 AM

The Federals are usually running one size wider. I have 19" 595 RPMs 225-40/255-35, and they are like 235/265.

iconone · 04-28-2015, 07:51 AM

Good info here. Subscribed.

Gary@TireRack · 04-28-2015, 10:03 AM

I'll rephrase the question : In the photo above, are both tires currently mounted on wheels and are those wheels the same size?

loesch · 05-07-2015, 10:11 AM

Quote:

Originally Posted by Gary@TireRack

I'll rephrase the question : In the photo above, are both tires currently mounted on wheels and are those wheels the same size?

The Continental's on the left were mounted on 9.5in wheels. The Federal's were not mounted at all.

04-16-2015, 10:54 PM	#1
loesch Captain 129 Rep 917 Posts Drives: 2011 BMW 135i M Sport Join Date: Feb 2012 Location: State College, PA iTrader: (4)	Demonstration of how much tire sizes can very You'll sometimes see people say that a tire runs wide. Well, what does that mean? Most of us want to know what the widest tire is that we can fit without rubbing. You can't look only at the number embossed on the side of the tire. Manufacturers must have almost no oversight in the specifications they publish for their tires. Kind of scary. I took this picture the day my new tires got mounted. The tread width as listed on the Federal Web site is 9.3in. for a 255x35 18. Tirerack.com has the tread width of the 255x35 18 Continental ExtremeContact DW listed as 9.5in. See anything wrong there? Left: 255x35 18 Continental ExtremeContact DW, Right: 255X35 18 Federal 595RS-R Attached Images __________________ 2011 135i M Sport 6MT LeMans Blue \| Active Autowerke Gen II axle back \| Berk d******* \| N54 gutted mids \| FuelIt Walbro 450 fuel pump \| Pure Turbos Stage 2 \| 3.5bar TMAP \| Pure Turbos inlet pipe \| BMS intake \| BMS oil catch can \| ETS intercooler \| ETS charge pipe \| BMS JB4 w/ ISO firmware \| BMS backend flash stacked on PPK \| Eibach springs \| Whiteline rear subframe bushing inserts \| cosmetic tidbits
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04-16-2015, 11:59 PM	#2
ilikebmxbikes Banned 1518 Rep 4,744 Posts Drives: S65 1M Clone & E92 M3 4.6L Join Date: Apr 2011 Location: San Francisco iTrader: (42) Garage List '08/13 1M Clone 4.0L [10.00] '11 e92 M3 4.6L [10.00]	Tires can vary a lot. I run 265/275/35/18 r888 which run as wide as 275/285/35/18 r-s3.
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04-17-2015, 03:12 PM	#3
Kgolf31 Brigadier General 459 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	Basic rule of thumb (and very rough one). Any high performance street tire (ie RS3, ZII*, Rival, RE71R) add 10mm for comparison length Any R-Comp, add 20mm to equate to a typical street tire
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04-17-2015, 03:29 PM	#4
l2iceman Private First Class 25 Rep 134 Posts Drives: e90 M3 Join Date: Mar 2015 Location: Canada iTrader: (0)	I'm looking at nankang ns2r, if I am planning to get their 235/40/17, would that be really wide? If so I would go with 225 if it'll run as wide as a 235 high performance tire.
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04-25-2015, 10:20 AM	#6
cbl117 Lieutenant 99 Rep 566 Posts Drives: 2013 e92 335i Join Date: May 2013 Location: Los Angeles iTrader: (1)	Golf, is the RE71R the new bridgestone offering that replaces the RE11?
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04-27-2015, 08:35 AM	#11
Gary@TireRack Moderator 369 Rep 4,745 Posts Drives: Formerly 1995 M3 Join Date: Oct 2006 Location: South Bend, IN, Tire Rack HQ iTrader: (2)	Are both of those tires mounted on wheels? __________________ Gary. Tire and Wheel Forum Moderator. Tire Rack Sales Rep Gary@Tirerack.com http://www.tirerack.com/a.jsp?a=AH8&url=index.jsp Please refer to 'Gary/E90 Post' as your previous contact when you order online to help support this forum.
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04-27-2015, 08:48 AM	#12
loesch Captain 129 Rep 917 Posts Drives: 2011 BMW 135i M Sport Join Date: Feb 2012 Location: State College, PA iTrader: (4)	The Continental's on the left were mounted on 9.5in wheels.
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04-28-2015, 04:26 AM	#13
nismo Private 10 Rep 95 Posts Drives: 335 e90 2008 Join Date: Jun 2014 Location: Albuquerque iTrader: (3)	The Federals are usually running one size wider. I have 19" 595 RPMs 225-40/255-35, and they are like 235/265.
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04-28-2015, 07:51 AM	#14
iconone Private First Class 20 Rep 172 Posts Drives: 207 swapped Wrx Join Date: Dec 2014 Location: Houston iTrader: (2)	Good info here. Subscribed.
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04-28-2015, 10:03 AM	#15
Gary@TireRack Moderator 369 Rep 4,745 Posts Drives: Formerly 1995 M3 Join Date: Oct 2006 Location: South Bend, IN, Tire Rack HQ iTrader: (2)	I'll rephrase the question : In the photo above, are both tires currently mounted on wheels and are those wheels the same size? __________________ Gary. Tire and Wheel Forum Moderator. Tire Rack Sales Rep Gary@Tirerack.com http://www.tirerack.com/a.jsp?a=AH8&url=index.jsp Please refer to 'Gary/E90 Post' as your previous contact when you order online to help support this forum.
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