235's or 245's??

Agati'sSTi · 06-18-2007, 07:11 PM

I have a set of SSR Professor SP1's 18x8.5 which I previously had 225/40/18 Michelin Pilot Sports. This size was too skinny for the 8.5 inch wheel so I am looking for something wider. Should I go with 235/40/18 or 245/40/18? I want to keep the sidewall pretty small and I have heard that the sidewall on 245/40/18's is a little big but I like the idea of a wider tire. Also does anyone know if Nitto NT555's are a good tire?

T3h_Clap · 06-18-2007, 07:20 PM

get a 235/40 in either an RT615, RE01r, AD07 or RS2

the NT555s are not as good as any listed above.

Agati'sSTi · 06-19-2007, 05:41 AM

Anyone else have an opinion?

T3h_Clap · 06-19-2007, 05:43 AM

Quote:

Originally Posted by Agati'sSTi

Anyone else have an opinion?

nope.

j/k, i'm sure someone will chime in.

***Crewchief*** · 06-19-2007, 05:45 AM

Had those wheels on my last sti, good pick! Now got Gram lights 18x8.5 57F's on the current STi. I say run a 255/35/18 like myself. You may rub, but i didnt. You can always roll the fenders or kick in some camber if you do. Also I'd listen to T3h Clap, he's probably our most knowledgeable wheel/tire guy on this forum.

TR11 · 06-19-2007, 05:48 AM

well a 235/40's sidewall will be 1/5" bigger than your current 225/40.

The 245/40 will be 2/5" bigger so your choice there.

Id agree with Clap about tires though - go with a known performer.

Bridgestone RE01R, Falken RT615 or Kumho MX if they come in that size. They are cheap.

T3h_Clap · 06-19-2007, 05:51 AM

issue with a 255/35 is there are not alot of options, and no "True" performers come in that size.

dukenukem · 06-19-2007, 06:02 AM

How big is the performance difference between 245/45 and 245/40 for RE01R or the likes ? Sorry to take it ot ..

T3h_Clap · 06-19-2007, 06:07 AM

Quote:

Originally Posted by dukenukem

How big is the performance difference between 245/45 and 245/40 for RE01R or the likes ? Sorry to take it ot ..

slower response, higher speed in a given gear.

traction wise would be less in theory since the 45 has more flex due to the higher sidewall.

245/40 RE01Rs are awesome, I'm tempted to get a setup to run STU.

roydriessens · 06-19-2007, 06:12 AM

First off, sorry that my first post is a hijack, thousand appologies, you can slap me if you come over to Belgium

Would I be able to run 245/40's on an 18x8.5 +44 without any other adjustments ?

b00st3d · 06-19-2007, 06:27 AM

im runnin 245x35s on my 18x8.5" +45 advans. only 0.2" shorter overall than the stock tires.

T3h_Clap · 06-19-2007, 06:29 AM

Quote:

Originally Posted by roydriessens

First off, sorry that my first post is a hijack, thousand appologies, you can slap me if you come over to Belgium

Would I be able to run 245/40's on an 18x8.5 +44 without any other adjustments ?

it really depends on your suspension setup.

that tire is .7" taller than stock and cause issues rubbing in the front if you're too low.

Agati'sSTi · 06-19-2007, 07:09 AM

So I would not be able to go very low with a 245/40/18 RT 615? Because I like to have my ride height pretty low, wheel gap is my enemy.

will12345 · 06-19-2007, 09:01 AM

run a 245 35 18, heres my car ,take a look

18 x 8.5 re30's with a toyo t1r 245/35/18

T3h_Clap · 06-19-2007, 09:51 AM

Quote:

Originally Posted by willgroup5motorsport

run a 245 35 18, heres my car ,take a look

18 x 8.5 re30's with a toyo t1r 245/35/18

are you running the +44mm offset?

do you have any more shots.

Also, i'm very unhappy with the performance of my T1Rs.

06-18-2007, 07:11 PM	#1
Agati'sSTi Junior STI Driver Car: Silver 04 STi Fav Mod: Coilovers Location: New Jersey Posts: 68 Join Date: Jun 2005 Trader Rating: (0)	235's or 245's?? I have a set of SSR Professor SP1's 18x8.5 which I previously had 225/40/18 Michelin Pilot Sports. This size was too skinny for the 8.5 inch wheel so I am looking for something wider. Should I go with 235/40/18 or 245/40/18? I want to keep the sidewall pretty small and I have heard that the sidewall on 245/40/18's is a little big but I like the idea of a wider tire. Also does anyone know if Nitto NT555's are a good tire? This ad is not endorsed by this member. Please register or login to hide this ad.

06-18-2007, 07:20 PM	#2
T3h_Clap Wheel33tist Whore Car: Aspen White GDF-D Fav Mod: Pastelito Racing / SFSOC Location: Orlando Posts: 21,310 Join Date: Dec 2004 Trader Rating: (5)	Re: 235's or 245's?? get a 235/40 in either an RT615, RE01r, AD07 or RS2 the NT555s are not as good as any listed above.

06-19-2007, 05:41 AM	#3
Agati'sSTi Junior STI Driver Car: Silver 04 STi Fav Mod: Coilovers Location: New Jersey Posts: 68 Join Date: Jun 2005 Trader Rating: (0)	Re: 235's or 245's?? Anyone else have an opinion?

06-19-2007, 05:45 AM	#5
*Crewchief* Authorized Member-Vendor Fav Mod: Being IWSTI's Pawn Shop, lol Location: Charleston, SC Posts: 3,947 Join Date: Sep 2004 Trader Rating: (52)	Re: 235's or 245's?? Had those wheels on my last sti, good pick! Now got Gram lights 18x8.5 57F's on the current STi. I say run a 255/35/18 like myself. You may rub, but i didnt. You can always roll the fenders or kick in some camber if you do. Also I'd listen to T3h Clap, he's probably our most knowledgeable wheel/tire guy on this forum. Last edited by Crewchief : 06-19-2007 at 05:52 AM.

06-19-2007, 05:48 AM	#6
TR11 Professional STI Driver Car: 2004.5 STi Fav Mod: Driving School Location: Toronto Posts: 486 Join Date: Aug 2003 Trader Rating: (0)	Re: 235's or 245's?? well a 235/40's sidewall will be 1/5" bigger than your current 225/40. The 245/40 will be 2/5" bigger so your choice there. Id agree with Clap about tires though - go with a known performer. Bridgestone RE01R, Falken RT615 or Kumho MX if they come in that size. They are cheap.

06-19-2007, 05:51 AM	#7
T3h_Clap Wheel33tist Whore Car: Aspen White GDF-D Fav Mod: Pastelito Racing / SFSOC Location: Orlando Posts: 21,310 Join Date: Dec 2004 Trader Rating: (5)	Re: 235's or 245's?? issue with a 255/35 is there are not alot of options, and no "True" performers come in that size.

06-19-2007, 06:02 AM	#8
dukenukem Professional STI Racer Car: 06 Subaru WRX STI Location: Hurst, TX Posts: 716 Join Date: Jun 2006 Trader Rating: (1)	Re: 235's or 245's?? How big is the performance difference between 245/45 and 245/40 for RE01R or the likes ? Sorry to take it ot ..

06-19-2007, 06:12 AM	#10
roydriessens Junior STI Driver Car: Silver 04 EDM STi Fav Mod: none yet :) Location: Belgium Posts: 53 Join Date: May 2007 Trader Rating: (0)	Re: 235's or 245's?? First off, sorry that my first post is a hijack, thousand appologies, you can slap me if you come over to Belgium Would I be able to run 245/40's on an 18x8.5 +44 without any other adjustments ?

06-19-2007, 06:27 AM	#11
b00st3d Silver Member Car: 05 AW Subaru WRX STi Location: New Orleans, LA Posts: 544 Join Date: Dec 2005 Trader Rating: (0)	Re: 235's or 245's?? im runnin 245x35s on my 18x8.5" +45 advans. only 0.2" shorter overall than the stock tires.

06-19-2007, 07:09 AM	#13
Agati'sSTi Junior STI Driver Car: Silver 04 STi Fav Mod: Coilovers Location: New Jersey Posts: 68 Join Date: Jun 2005 Trader Rating: (0)	Re: 235's or 245's?? So I would not be able to go very low with a 245/40/18 RT 615? Because I like to have my ride height pretty low, wheel gap is my enemy.

06-19-2007, 09:01 AM	#14
will12345 Senior STI Driver Car: 04 subaru sti Fav Mod: 35r turbo kit Location: sunny san diego Posts: 315 Join Date: Apr 2007 Trader Rating: (1)	Re: 235's or 245's?? run a 245 35 18, heres my car ,take a look 18 x 8.5 re30's with a toyo t1r 245/35/18 Last edited by will12345 : 06-19-2007 at 09:32 AM.