dunlop ssr tire size comparison charts

davenew · 08-03-2005, 05:46 PM

Here's the yokos I have now:

Here's the Dunlop racing tires:

For comparison, here's michelin PS2s:

Lastly, the dunlops in 235/40:

From tirerack: "The industry rule of thumb is that for every 1/2" change in rim width, the tire's section width will correspondingly change by approximately 2/10"."

So the 255/35 dunlops would have 1.4" wider section width and 1.3" wider tread width than my current Yoko tires.

s4gobabygolovesbeer has a good recommendation on the 235 wide Dunlops. The 235 wide Dunlops have 1/2" wider section width than 255 wide Michelins!

I'm afraid I don't have room for 0.65" more tread sticking out on each side with the 255 wide Dunlops. I guess I could jack one wheel up and try to measure my current gap between tread and fender.

~~brian@AutoSpeed-gt25~~ · 08-03-2005, 06:40 PM

I would be concerned about the 255's even with your fenders rolled.

s4gonebabygone · 08-03-2005, 06:56 PM

i run rolled fenders up front with trimmed liners, and the rear fenders are bone stock. the rears dont rub at all. my car is also very low (25 front and 24.75 rear). if you want no rubbing at all you'll have to roll your fenders pretty heavily and trim your liner. if you're ok with a little rubbing, just go for the standard front rolling job.

when my car's on level ground, you cant fit the tip of your pinkie between my rear fender and the tire, but they never even touch. no sense wasting space :P

i can also personally guarantee that you wont fit the 255/35/18 dunlop race tires. i could see my tires being maybe 0.3 inches wider and rubbing on the fender and the suspension upright at the same time. a whole inch wider wouldnt even be close.

rktskicar · 08-03-2005, 08:06 PM

BBS CH 18x8.5 rims. These are listed at 10.2 section width at Tire Rack. The other problem you need to consider with a 235/40/18 is that is taller as well...

Bruce

s4gonebabygone · 08-03-2005, 09:11 PM

look here for more detail

fairenough · 08-04-2005, 07:26 AM

Wondering because I'd like to get the Hartmann/Achtuning RS6 reps, which are 18x8.5 ET35, but they say that with brand new brake pads they require 2mm spacers (that they include) so that would push the wheels out to ET33. I have worn brake pads now so it would probably be okay, but obviously someday I'll have to get new pads. Thus, I'm trying to decide whether to play it safe with 245/35 or go aggressive with 255/35. Thanks for any input.

fairenough · 08-04-2005, 08:02 AM

Those 235/40-18 race tires of yours that are 10.2" wide, how close are they to sticking out of the fenders? Thanks.

NogaroMariner · 08-04-2005, 09:40 AM

I lost your e-mail....

Frank

rktskicar · 08-04-2005, 10:09 AM

liners removed. Not super low, ~ 25.6" (front). You can't see the tire edge very well with this picture, but this gives you an idea where they sit looking from back.

Bruce

fairenough · 08-04-2005, 10:18 AM

The tires definitely are close to the edge, but sure looks nice.

08-03-2005, 05:46 PM	#1
davenew AudiWorld Super User Account #: 70028 Join Date: Feb 2004 Posts: 7,828	dunlop ssr tire size comparison charts Here's the yokos I have now: Here's the Dunlop racing tires: For comparison, here's michelin PS2s: Lastly, the dunlops in 235/40: From tirerack: "The industry rule of thumb is that for every 1/2" change in rim width, the tire's section width will correspondingly change by approximately 2/10"." So the 255/35 dunlops would have 1.4" wider section width and 1.3" wider tread width than my current Yoko tires. s4gobabygolovesbeer has a good recommendation on the 235 wide Dunlops. The 235 wide Dunlops have 1/2" wider section width than 255 wide Michelins! I'm afraid I don't have room for 0.65" more tread sticking out on each side with the 255 wide Dunlops. I guess I could jack one wheel up and try to measure my current gap between tread and fender. __________________ '00 S4 EPL Stg 3 (March'04-May'08) '08 BMW 135i Dinan Stg 2 (May'08-Present) '00 S4 Imola widebody AWE Stg 3 (Bought Nov'08. AWE stg 3 kit is sold.. I'm switching over to ASP GT soon)

08-03-2005, 06:40 PM	#2
~~brian@AutoSpeed-gt25~~ Banned Account #: 55192 Join Date: Apr 2003 Posts: 1,039	I have a set of 235-40-18 that I used at a track event and I got a lot of rubbing... I would be concerned about the 255's even with your fenders rolled.

08-03-2005, 06:56 PM	#3
s4gonebabygone Member Account #: 83125 Join Date: Oct 2004 Posts: 2,082	you wont have a problem with 235/40/18. i promise :P (more) i run rolled fenders up front with trimmed liners, and the rear fenders are bone stock. the rears dont rub at all. my car is also very low (25 front and 24.75 rear). if you want no rubbing at all you'll have to roll your fenders pretty heavily and trim your liner. if you're ok with a little rubbing, just go for the standard front rolling job. when my car's on level ground, you cant fit the tip of your pinkie between my rear fender and the tire, but they never even touch. no sense wasting space :P i can also personally guarantee that you wont fit the 255/35/18 dunlop race tires. i could see my tires being maybe 0.3 inches wider and rubbing on the fender and the suspension upright at the same time. a whole inch wider wouldnt even be close. __________________ S4=History New Track Whore (above): Kirk rollbar, Sparco Evo seats & VAC Motorsports brackets, G-Force 6pt harnesses, Rear Interior Stripped, Hawk HT-10 track pads, B&M Technik shifter, H&R sport springs, Falken Azenis RT-615 255 & 275 tires, IOPort Camera Mount and a Fire Extinguisher (SSR GT2 19x8.5 & 19x10 with Hankook K104 245/35-19 & 275/30-19 tires for the street and rainy track days) pictures: http://public.fotki.com/fourtailpipes/ 1 lap at summit: http://www.lehigh.edu/~armc/one%20lap%20at%20summit.WMV another lap at summit: http://www.lehigh.edu/~armc/summit%2...open%20lap.WMV

08-03-2005, 08:06 PM	#4
rktskicar AudiWorld Super User Account #: 44443 Join Date: Oct 2002 Posts: 8,593	My 255/35/18's (Pzero Nero M+S) barely clear my rear struts for ET 35 BBS CH 18x8.5 rims. These are listed at 10.2 section width at Tire Rack. The other problem you need to consider with a 235/40/18 is that is taller as well... Bruce __________________ Stock 010 6MT Blue Sprint B8 S4. Premium +, Sport diff, B&O BBS CH, 255/40/18 Bridgetstone RE960 AS 01.5 6MT ASP Stage 3 S4 (sold 9/25/09)

08-03-2005, 09:11 PM	#5
s4gonebabygone Member Account #: 83125 Join Date: Oct 2004 Posts: 2,082	oops... didnt realize those wheels were et30... you might have to do a bit more rolling than i did look here for more detail __________________ S4=History New Track Whore (above): Kirk rollbar, Sparco Evo seats & VAC Motorsports brackets, G-Force 6pt harnesses, Rear Interior Stripped, Hawk HT-10 track pads, B&M Technik shifter, H&R sport springs, Falken Azenis RT-615 255 & 275 tires, IOPort Camera Mount and a Fire Extinguisher (SSR GT2 19x8.5 & 19x10 with Hankook K104 245/35-19 & 275/30-19 tires for the street and rainy track days) pictures: http://public.fotki.com/fourtailpipes/ 1 lap at summit: http://www.lehigh.edu/~armc/one%20lap%20at%20summit.WMV another lap at summit: http://www.lehigh.edu/~armc/summit%2...open%20lap.WMV

08-04-2005, 07:26 AM	#6
fairenough AudiWorld Senior Member Account #: 17124 Join Date: Mar 2001 Posts: 4,172	How close is that 255/35 18x8.5 setup to sticking out past the fender? Wondering because I'd like to get the Hartmann/Achtuning RS6 reps, which are 18x8.5 ET35, but they say that with brand new brake pads they require 2mm spacers (that they include) so that would push the wheels out to ET33. I have worn brake pads now so it would probably be okay, but obviously someday I'll have to get new pads. Thus, I'm trying to decide whether to play it safe with 245/35 or go aggressive with 255/35. Thanks for any input.

08-04-2005, 08:02 AM	#7
fairenough AudiWorld Senior Member Account #: 17124 Join Date: Mar 2001 Posts: 4,172	Hey, can I bug you with the same question as I asked rktskicar? Those 235/40-18 race tires of yours that are 10.2" wide, how close are they to sticking out of the fenders? Thanks.

08-04-2005, 09:40 AM	#8
NogaroMariner New Member Account #: 58963 Join Date: Jul 2003 Posts: 215	Brian, drop me a message as to how your car is doing I lost your e-mail.... Frank

08-04-2005, 10:09 AM	#9
rktskicar AudiWorld Super User Account #: 44443 Join Date: Oct 2002 Posts: 8,593	Very close to even with fender edge. My fenders are rolled and... liners removed. Not super low, ~ 25.6" (front). You can't see the tire edge very well with this picture, but this gives you an idea where they sit looking from back. Bruce __________________ Stock 010 6MT Blue Sprint B8 S4. Premium +, Sport diff, B&O BBS CH, 255/40/18 Bridgetstone RE960 AS 01.5 6MT ASP Stage 3 S4 (sold 9/25/09)

08-04-2005, 10:18 AM	#10
fairenough AudiWorld Senior Member Account #: 17124 Join Date: Mar 2001 Posts: 4,172	Thanks. Whole liner is removed, or just trimmed near the fender lip? The tires definitely are close to the edge, but sure looks nice.

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