18X8 and 18X9.5 and tire options...
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2004-2007 Cadillac CTS-V General Discussion Discussion, 18X8 and 18X9.5 and tire options... in Cadillac CTS-V Series Forum - 2004 - 2007; Hello! I've been on the forums awhile, and i noticed you guys aren't into the 20's and chrome, so i ...
  1. #1
    mikesim's Avatar
    mikesim is offline Cadillac Owners Member
    Automobile(s): Cadillac CTS
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    18X8 and 18X9.5 and tire options...

    Hello!

    I've been on the forums awhile, and i noticed you guys aren't into the 20's and chrome, so i thought it'd be more appropriate to ask here than the regular CTS forum.

    I bought some 18X7.5 +48 and stuck 245/40R18s on them and they didn't look good at all. so i said "return them, i want another set"

    I want to fill out the fenders, but not with huge wheels. I love the look of the newer BMW 530's, and i'm going with a simple 5 spoke as well.

    I plan on buying 18X8 and 18X9.5 wheels +40 all around with 245/40R18 and 265/35R18 tires (this week). I'm using 1010tires.com tire size calculator, and wheelsmaster.com for sizing, and just wondering if i'll have any rubbing issues.

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    varrius is offline Cadillac Owners Fanatic
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    Re: 18X8 and 18X9.5 and tire options...

    I hope Trukk doesn't see this thread. =(

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    mikesim's Avatar
    mikesim is offline Cadillac Owners Member
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    Re: 18X8 and 18X9.5 and tire options...

    Quote Originally Posted by varrius View Post
    I hope Trukk doesn't see this thread. =(
    i know, everyone has an opinion, and wide rear tires are really a thing of the past. they screw up your brake balance with the extra contact patch, and the extra weight (rotating mass) doesn't help acceleration and deceleration either.

    but i want flushness! and i like the look. i'd rather see some old school euro-looking wheel and tire combo than what's in style now (22's).

  5. #4
    trukk's Avatar
    trukk is online now Cadillac Owners Master
    Automobile(s): '05 CTS-V, '12 CTS-V Manny Vagon
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    Re: 18X8 and 18X9.5 and tire options...

    LOL,

    Anyone that comes in here and says, "I'm sick of all the talk of 20's and chrome rims" is OK in my book

    The stock CTS-V wheels are 245/45 R18 on 8.5" wheels

    I've been running staggered on stock wheels for about 2.5 years. First set was 245/45 F, 275/40 R. This was fine on 8.5" rims, so you should have no issues with 9.5 in the back. Filled the wheel wells very nicely. Take a look at a pic of stock CTS-V, and you'll see what the gaps look like.

    After that I changed to 245/40 F 275/35 R. There is defiantely a larger gap. For asthetics, I would have stayed with the first setup, but the tires I wanted were only available in that size (falken Azenis RT-615's)

    Good luck.

    -Chris
    2005 CTS-V:No Roof|T2+Eibachs|Corsa|UUC:Shifter, 2pc rotors, B-Lines, Motor/Tran Mounts, Diff Bushings|LPE CAI|FFV IntakeTube|Hotchkis Sways|Kooks 1.75 Coated LTs+cats|KARS III |Mamofied Fast90 + NW90|224/228 111+0 XFI/XE-R .609/.588+Dual Springs|ATI 25% UD Pulley|YT 1.7" UltraLites|Melling HiFlow OP|Cloyes Hex Adjust Timing Set|Lucas 42# Flow Matched Injectors|Katech LS9X Twin-Disk ClutchMustang Dyno Tuned (SAE): 412rwhp / 380 rwtq
    2012 CTS-V:No Roof|Wagon|M6|Recaros|Bone stock (for now)

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