| 2004-2007 Cadillac CTS-V Performance Mods Discuss all Cadillac CTS-V performance modifications here. Engine tunes, exhaust, intake, suspension and more. | Cadillac Forums: 315 too much rubber?? 
10-23-09, 06:29 PM
| | Cadillac Owners Member Cadillac(s): NONE yet | | | | | 315 too much rubber?? CCW has a "deal" on their site that you can get there wheels with Hankook Ventus R-s2s... 265/35/18 F and 315/30/18 rear... is that too wide for my LS7 with 530 ft/lb trq? ... I have no traction with 245s, but I doubt anyone does...
so my question is, should I potentially do their deal? and get 315? or just get rims and get my own tires... skinnier than 315
my second question is, if not 315, then what size?
last question, if not 315, what rim width to go with suggested tire width
Thank a lot guys, I appreciate all of the help
Nolan | 
10-23-09, 06:39 PM
| | Cadillac Owners Fanatic Cadillac(s): 05 CTS-V | | Join Date: Aug 2009 Age: 23 | | | Re: 315 too much rubber?? Im not fimiliar with the offsets for our V to be honest.
but 315s are huge, are your stock fenders pulled or rolled ...
or are you getting a wide rim with a funky offset ?
Id like to see how they fit. | 
10-23-09, 08:59 PM
|  | Cadillac Owners Connoisseur Cadillac(s): 04 CTS-V with a little hp persuasion device | | Join Date: Oct 2007 Age: 24 | | | Re: 315 too much rubber?? Without modification to the trailing arms, you cant put anything much wider than a 10" rim in the rear.
__________________ 04 Raven CTS-V / Forged and maggied LS6 / 90mm TB / 8 rib pulleys / 8" overdrive balancer with 2.7" blower pulley / LG G5X1 / Crane 1.8 gold rollers / 1 7/8 Kooks / ARP hardware throughout / Melling oil pump / Cloyes double roller / Volant CAI / Fidanza LS7 flywheel / Spec Stage 3 / Ground Control / QA1's / RC51 motor mounts / UUC diff, and shifter bushings / UUC Vknob / Katech STS / Rear strut bar / Kars III | 
10-23-09, 11:08 PM
| | Cadillac Owners Member Cadillac(s): NONE yet | | | | | Re: 315 too much rubber?? what about 295 or 305 ? on a 10" wide wheel? | 
10-23-09, 11:14 PM
|  | Cadillac Owners Fanatic Cadillac(s): 2004 CTS-V | | Join Date: Sep 2008 Location: Washington, DC | | | Re: 315 too much rubber?? Quote:
Originally Posted by ctsv154 04 Raven CTS-V / Forged and maggied LS6 / 90mm TB / 8" overdrive balancer with overdriven rears and 3.2" snout pulley / LG G5X1 / Crane 1.8 gold rollers / 1 7/8 Kooks / ARP hardware throughout / Melling oil pump / Cloyes double roller / Volant CAI / Fidanza LS7 flywheel / Ground Control / QA1's / RC51 motor mounts / UUC diff, and shifter bushings / UUC Vknob / Katech STS / Rear strut bar / Kars III | Hey 154, how much rwhp/tq are you putting down?... just so when I dream I can put some numbers to it!
sorry to t/j
__________________ 2004 CTSV / LPE CAI / Corsa / UUC Shifter / 245/275 40's / Accessory wheels / Bluetooth / 2009 Ass Dyno Champion | 
10-23-09, 11:30 PM
|  | Cadillac Owners Enthusiast Cadillac(s): 2004 CTS-V | | Join Date: Mar 2005 Location: Gillette, WY Age: 28 | | | Re: 315 too much rubber?? See my sig for what I am running.
To my knowledge, the widest tire that we can run in the rear is a 295. I am lowered about 1" in the rear and I can run the 295/30zr19 (on my 10" CCWs) with no rubbing on the street (the road course was another story though...).
I run Toyo Proxes R888s (DOT-r compound) and still do not have very good traction on the street unless the tires are super warmed up (but again, the traction on the road course is amazing).
If you click on my forum name and then the albums that come up on my page you can see some pix of my wheel/tire setup and see how much the 295 bulges on the 10" wheel. I don't think a 315 would work and like it was stated above, you most likely can't run a wheel wider than 10" anyway. Hope this helps.
Also, you most likely will have problems in the front with the 265s. Even if you are not lowered (or don't plan to be) it is really hard to fit anything wider in the front that won't just destroy the inner fender linings.
__________________ 2004 CTS-V Mods: Lingenfelter CAI, OEM style spoiler, CCW SP600 wheels (19"x9" and 19"x10"), Toyo Proxes R888 (F: 235/35YR19 - R: 295/30YR19), Magnaflow Cat-back, UUC Shifter w/ Lindsay bushings, FG2 shocks, GC Coilover Kit (600f/650r), Hotchkis Swaybars, Custom FRCs, Kooks 1 3/4" Cermakromed LT Headers & HiFlo cats, ARP Header Studs, Granatelli 1200* Wires, NGK TR55ix Plugs, OC Autosports D&S Rotors, Hawk Pads, SS Brake Lines, 561 Wheelhop Kit, D.R.E. Dyno Tune = 351 hp/ 365 ft-lbs (corrected) | 
10-24-09, 12:51 AM
| | Cadillac Owners Member Cadillac(s): NONE yet | | | | | Re: 315 too much rubber?? wow thanks a lot tweeter, I appreciate it. great information... yeah I didn't really want 265 in the front anyway, so that is good to know... and also 10" being the widest is good as well... what about a 305? or is that pushing it on a 10"... is 10.5 too much? (because isn't 315 recommended for a 10.5?) so technically I would imagine I could do 305 on 10"... or is that too much as well? | 
10-24-09, 03:04 AM
|  | Cadillac Owners Member Cadillac(s): '05 CTS-V | | Join Date: Aug 2009 Location: St. Cloud, MN Age: 25 | | | Re: 315 too much rubber?? The tire will matter a little too. Not sure how the tires your looking at runs as far as width but a 305 (or any size)in brand A will actually differ in true width to brand B. Some brands/style of tires are just tend to buldge more than others even though the size is the same. I had 305 Nitto drag radials on my vette with 10.5" wide wheels and they bulged quite a bit. Just go with a drag radial if you want the most traction. A 275 drag radial with have a lot more grip than a 305 street tire. Check out BFG KDW's for the front, and BFG KDW drag radials for the rear...pretty reasonably priced compared to alot of other tires out there.
__________________ 2005 CTS-V: Muffler delete, UUC Shifter and bushings, BMR Anti-hop Kit, Trailing arms, Toe-Rods and Diff brace, DDM 6000k low beams and 35w fogs, Clear Fog mod, Tint, Specter Werkes Spoiler | 
10-24-09, 01:24 PM
|  | Cadillac Owners Enthusiast Cadillac(s): 2004 CTS-V | | Join Date: Mar 2005 Location: Gillette, WY Age: 28 | | | Re: 315 too much rubber?? Quote:
Originally Posted by silverado_nolan wow thanks a lot tweeter, I appreciate it. great information... yeah I didn't really want 265 in the front anyway, so that is good to know... and also 10" being the widest is good as well... what about a 305? or is that pushing it on a 10"... is 10.5 too much? (because isn't 315 recommended for a 10.5?) so technically I would imagine I could do 305 on 10"... or is that too much as well? | I am not sure about the 305, but I do know that my 295 R888 is pushing it on my 10" wheel, but another brand, or a true street tire might not be as wide as my r-compounds. I don't know if I would take the chance... Quote:
Originally Posted by Matt05V The tire will matter a little too. Not sure how the tires your looking at runs as far as width but a 305 (or any size)in brand A will actually differ in true width to brand B. Some brands/style of tires are just tend to buldge more than others even though the size is the same. I had 305 Nitto drag radials on my vette with 10.5" wide wheels and they bulged quite a bit. Just go with a drag radial if you want the most traction. A 275 drag radial with have a lot more grip than a 305 street tire. Check out BFG KDW's for the front, and BFG KDW drag radials for the rear...pretty reasonably priced compared to alot of other tires out there. | I totally agree with this, it is right on.
By the way: Please consider becoming a Supporting Member. I have been a supporter of this site since March 2005 and I have received so much great insight and actual help (a forum member by the name of BBV basically installed my shocks and springs for me) from this site, not to mention how many thousands of dollars I have saved because of the great info. It is appropriate to give back to the site when we get so much from it. | 
10-24-09, 09:47 PM
| | Cadillac Owners Member Cadillac(s): NONE yet | | | | | Re: 315 too much rubber?? yeah definitely I will... I was a huge supporting member on my truck site and I was an off-road moderator there as well... well I am still am, but yes I will | 
10-24-09, 10:29 PM
| | Cadillac Owners Enthusiast Cadillac(s): 05 Raven V | | Join Date: Oct 2008 Location: San Diego | | | Re: 315 too much rubber?? I should note in advance, Im REEAAAALLY against the use of spacers, I feel its putting a band aid on a bigger problem and usually it leads to ugly "tire poke" situations which cause rub and eventually, failure in hard driving conditions.
275s = stock rear rim with no mods max, though for extremes of handling you wont want to break 255s on an 8 inch rim.
295s= 10 inch rear rim minimum, Im running a 10.5 with 295s, will provide excellent handling, requires either massive spacers or custom trailing arms.
315s = 10.5 inch rear rim minimum, 11 would be better for handling, requires modded trailing arms, custom bent sway bar or spacers to avoid it, rerouted ebrake cable, dust covers removed from shocks, possible minor tubbing. This is for stock height vehicles, if you're lowered, good luck.
Currently only Luna and I have the modded trailing arm setups. I'm really looking forward to more people getting these. Beware, more tire = more grip, more grip = more blown rear ends.  | 
10-25-09, 12:01 PM
|  | Cadillac Owners Fanatic Cadillac(s): 05 CTS-V w/ warmed-over LS7 | | Join Date: Sep 2007 Location: N.C. Lowcountry Age: 63 | | | Re: 315 too much rubber?? Here's are 275/40s (PS2) on 9.5" (1" widened stock rims) with a 5mm spacer. This setup clears the trailing arms by ~.4 " or so.
The tire carcass is right where it needs to be (not pinched) for handling. I'm using the GMPP bars and have the rears set in the loose (inner) hole, which seems to compliment, for T/C purposes, the traction provided by the larger tires.
This is not a drag setup but from a handling standpoint, works very well (unless you gas it in a corner with the T/C off  ).
Last edited by Scatillac; 10-25-09 at 12:30 PM.
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10-26-09, 03:15 PM
| | Cadillac Owners Enthusiast Cadillac(s): 04 CTS-V | | Join Date: Mar 2008 Location: Schaumburg, IL Age: 27 | | | Re: 315 too much rubber?? my 255/40s on my CCWs in front occasionally rub the plastic fender lining when doing some hard cornering, hence there has been some modifications done to the fender lining by the tires... shaved off some nice chunks, lol... as for the 285/35s in the read on my 10" wheels, if you plan to go lower, i wouldn't go wider than a 285, UNLESS, you go with a thinner sidewall (30 or even 25)... I had nasty rubbing with my rear fenders and the tires because they would catch the fender and leave a nasty hot mess of rubber caked on the inside of the fender, of course the tires looked like crap therafter also.... keep in mind i have Nitto Invos... each tire brand will be different... i'd like to eventuall y go wider with the tire (305) and make the rear stance look killer, but i'm waiting for 2003rc51 to fab up those uber sweet trail arms and toe rods for me... i'll try to dig up some pics if i can find them... wheel/tire/ride height combos are a PITA with this car.... have fun | 
10-26-09, 05:04 PM
|  | Cadillac Owners Connoisseur Cadillac(s): 2005 CTS-V, Black, SC, 510RWHP/560FTLBS and a really slow C6 | | Join Date: Aug 2004 Location: Home of the AFC East Champs!!! Age: 45 | | | Re: 315 too much rubber?? Here's my take:
1) 10" rim is max, arm is in the way, tub it if you want more
2) Look at tires.com for Hankook newest offering, http://www.discounttiredirect.com/di...0&rd=19&cs=295
3) Toyo R888s are cheap here, http://www.tiresdirect.net/TOYO_Prox..._P4214C789.cfm
4) No one makes a 315/30/19, you will have to settle for a 315/25/19 or 305/30/19
5) Flare kits available on the V, not cheap, I think Spectre Werks is the only vendor, Chef's V was the  with them on
6) CCW is king, look at the C10 in Black Powdercoat
7) My PS2 295r rubs on occasion, car is stock height, they also stick out a tiny bit but no one notices
8) Recommended rim size for accompanying tire sizes is only a guide, probably a lawyer put it out there, if you can get it on the rim go for it, as someone mentioned your contact area will be lessened | 
10-26-09, 06:47 PM
| | Cadillac Owners Member Cadillac(s): 05 V | | Join Date: Aug 2009 Location: Calgary Age: 31 | | | Re: 315 too much rubber?? TIRERACK is cheaper, as usual...
half way down for the Hankook Ventus V12 evo K110's... same size... 208 each LOOK HERE | | Cadillac Discussion Tools | | |
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