Help with tire size ??

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01-29-2007 | 05:20 PM

polo3211

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I am a bit confused and since all these tires sizes are special order I want to get it right.
What setup is best for a set of OEM 166's on a 2005 525i non sport package, I do not want any problems with rubbing but I would like the least amount of gap.

Dealer reccomends
Front 245/35/19
Back 275/30/19

Thee other two setups I have heard of are;

Front 245/40/19
Back 275/35/19

And

Front 245/35/19
Back 285/30/19

Also any thoughts on Brigestone Potenza 960s
Thanks...I appreciate any help before I order my tires!

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01-29-2007 | 05:25 PM

MikeBuzzsaw

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From: Los Angeles, CA

Quote:

Originally Posted by polo3211' post='385117' date='Jan 29 2007, 08:20 PM

I am a bit confused and since all these tires sizes are special order I want to get it right.
What setup is best for a set of OEM 166's on a 2005 525i non sport package, I do not want any problems with rubbing but I would like the least amount of gap.
Dealer reccomends
Front 245/35/19
Back 275/30/19

Thee other two setups I have heard of are;

Front 245/40/19
Back 275/35/19

And

Front 245/35/19
Back 285/30/19
Also any thoughts on Brigestone Potenza 960s
Thanks...I appreciate any help before I order my tires!

Since you are on non sport, there's going to be huge gap. 1-2 inches. I suggest you lower it with eibachs pro kit which drops it 1.2 all around, or HR sport which drops 1.3 front and 1.2 rear.

If you want the rear tires to looks fat and wide, go with 285. But not many manufactures produce this size, so you might have to buy higher cost tires. I think with Potenza A50 something, they are $1200 for the entire setup. Pirelli are 1500+. If you want to save money, go with 275/30 in the rear and 245/35 up front with General Exclaim @ tirerack. They are $600 total ship and has fantastic reviews. That's the setup I will have and many other forum members run such as vegastrashed and alpinewhite.

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01-29-2007 | 06:04 PM

vegastrashed

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From: San Diego, CA

My Ride: 2007 E63 AMG | Obsidian Black | Schwarzes Nappa | Black BirdEye Maple | Premium II Package | Electronic Trunk Closer | Parktronic Engine: RPi/Powerchips custom ECU tune, RPi Ram Air Kit (BMC filter, scoops), RennTech Sport exhaust, secondary cats, charcoal and resonator delete, custom AAA x-pipe Exterior: 50% side windows / 35% rear window Formula One Pinnacle Series | Flat AMG hood emblem Suspension: Renntech Lowering Module Wheels/Tires: Radenergie R10, Falken FK452 245/30/20, Yokohama ADVAN Sport 285/25/20 ----------------------------------------- 2005 545i Sport SMG | Ti Grau | Schwarzes Dakota | Anthracite Maple | Logic 7 | Nav Engine: Custom AFE CAI, Superchips ECU remap, Sprint Booster, RDSport Dual Exhaust Conversion with Quad Pipes and X-pipe, 3 resonators deleted, 90mm tips! Exterior: M-Tech Aero kit | M5 Mirrors | M5 Rear Bumper | Trunk Lid Finisher | Vorsteiner decklid spoiler | 50% Formula One Pinnacle Tint Suspension and Brakes: Bilstein PSS9 coilovers, JBT BBK: 16" cross-drilled rotors, 8 piston and 15" cross-drilled rotors, 4 piston Wheels: VIP Modular VR 02 20x9F, 20x10R | Toyo T1R 245/30/20F, 285/25/20R Lights: PIAA 4150K Xtreme White Plus fog lights, AIB v3 MOST IMPORTANT: Hardwired V1; =) ED Date: 4/7/05, Re-delivery date: 5/21/05

I agree with MikeBuzzSaw, if you're upsizing wheels there will be a HUGE gap that's going to bug you. Springs or coilovers are in your future; springs being the cheaper route.

The recommended BMW tire size for 19"s are what the dealer quoted you. If you run 245/40/19 and 275/35/19, you'll throw off your speedometer readings.

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