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Wheels/Tires/Offsets
Submitted by: Bob Vernon (rvernon1@san.rr.com)

Below is a whole lot of info I've collected, cut, pasted and edited plus personal observations, comments and opinions I've put together over the past year or so about Passat wheel & tire options.  I'm no expert in particular, I just try to keep updated with the latest info I run across.  I hope all the websites are still valid, I haven't checked them in a while!

  When you upgrade from the OEM 15 inch to a 16 or 17 inch rim, the best fit tires you could mount will have a shorter sidewall (205/55-16, 215/55-16, 225/50-16, 205/50-17, 215/45-17, 225/45-17).  This gives you a larger patch of rubber on the road and the shorter sidewall makes steering response faster. There will also be less cornering  wallow and squeal than the OEM 195/65-15 tires you probably have now.  Maybe you know this, but as an example, "55” means the sidewall height is 55% of the tread width.  But with the shorter sidewall and depending on the tire you select, you will get a harsher ride too.  Peer pressure aside, a tire choice should depend on what you want or need in a balance of performance, wet/dry, high speed stability, cornering, all season capabilities, treadwear life, & ride comfort.  I suggest that you go to the TireRack (www.tirerack.com) website and research and compare tires there.  They have loads of extremely comprehensive tire info including comparative ratings and numerical scoring on all sorts of characteristics like wet handling, dry handling, hydro planing resistance, cornering, noise, ride comfort, wear, etc.  You can see which tires have the best performance specs that interest you.  I don’t recommend a specific tire choice....   I know it's very cool to have the widest ultra high performance sticky tire on your Passat but you might consider taking a step back one level and look at the "High Performance Touring" tires if you want a better ride, longer treadwear life and lower noise level.   My own experience is that the lowest profile most sticky highest performance VR & ZR tires perform extremely well but are often poor in wet weather and wear out quickly (some at 20,000 miles or less) plus tend to have a harsh ride, especially at the lowest profiles.  I've owned all types of tires and my current choice is the "All-Weather Performance Touring" Michelin MXV4+ tire basically because it fits my driving style.  I don't scream around at breakneck speeds any more like I did 25 years ago - maybe you do and should look at the more performance oriented tires.  Tirerack has them all well classified.  I might step up a notch in tire performance when these Michelins wear out.  But - that will be a while because the treadwear rating is 400.  Dunlop has a new all-weather performance "SP Sport 5000" tire that I'd consider.  The Dunlops, Yokohamas and Pirellis seem to be the most popular but also consider some of the budget performance tires like Sumitomo, Toyo, Falken and Nitto.  They have come a long ways in building their reputations.  Falkens are very popular with the Volvo Turbo crowd.

  Money issues with wheel/tire upgrades...  Shop around, Tire Rack and Discount Tire Direct on the web have great prices.  I relate below how I bought my upgrade within a few days of purchasing my Passat and did a great deal with trading in my new OEM Michelins. 

 Wheels, Tires & associated Offset questions come up frequently on VWVortex. Offset is somewhat complicated.  It took me a while to figure out offset and it's difficult to explain without pictures.  

  "Zero offset" means that the mounting face of the wheel (where the lug nuts are) is exactly at the center between the two outer edges of the tire rim.  A negative offset number like 45 mm for the OEM means that the mounting surface is 45 mm off center thus moving the entire wheel inward.  This negative offset is why most front wheel drive cars have a rather flat appearing wheel when compared to the wheels of some other cars, particularly rear wheel drives like BMW. These offsets are important and only a certain range actually works on a car specifically in order to clear suspension, fenders, brakes, facilitate turning of front wheels, etc.  Wheel design must be relatively exact to adjust the fit for wider rims.  About the widest you'll ever see on a Passat is an 8 inch wide rim on the Passat and the offset may have to be changed to gain the proper clearances. 

  PICTURE OF WHEEL OFFSET (Courtesy of  the Tire Rack)

The stock offset for both the factory steel wheels and the very expensive VW upgrade alloys 45 mm.  All the factory VW alloys are 7 inches wide.  It seems that most aftermarket alloys (like mine) are 35 mm offset, a few are even 30 mm and I've also heard of 38, 40 and 42 mm offset alloys.  The most common 35 mm offset brings the outer edge of the alloy out farther in the wheel well when compared to the factory wheels.  According to Tire Rack, Discount Tire Direct and my local Discount tire shop staff, there's a range of offset within about 10 mm of OEM that is considered  "acceptable" by the industry.  I have this 35 mm offset which is 10 mm off of OEM and my tires were inspected and rotated at 5000 and 10000 miles with no out of the ordinary wear pattern.   If you are interested in a comparison with the stock 45 mm, there's an offset calculator at:

  http://toy4two.home.mindspring.com/offset.html

  What do next with calculations may be a little off, I've heard that OEM steel rims are only 6 inches wide but haven't confirmed it, maybe they are 7 inches.  If they are 7 inchers, the calculations will be different.  Anyway... I've done a few calculations to determine the changes using my own 35 mm offset 7 inch wide alloys versus OEM.  Based on the calculator at the above website, a 10 mm offset difference (45 OEM to aftermarket 35mm) and from a 6 inch wide stock steel rim to a 7 inch alloy is 23 mm, almost an inch further out in width.  I you opt for an increased width with new alloys, say an inch wider at 8 inches, you'll see that your rim edge is out 35 mm further, almost one & a half inches out further.  At 8.5 inches, it's way out   Where people get into trouble is the worst case multiple when they go from stock Passat wheels (15x6 at 45 mm offset) to as wide 8.5 inches in an aftermarket alloy PLUS an offset change of 15 mm (stock 45 to aftermarket 30 mm) AND THEN put on the fattest tires possible like a 225/50 (adds over an inch in tire width alone).  They end up with wheels/tires obviously sticking out of the wheel well!  More than one VWVortex posting in the past has expressed lament after doing this kind of combination.  Thanasi "One Bad Greek" found a unique solution to this problem - he had the inner mounting surface of the wheel machined to change the offset for the better.  All these factors are why a tire dealer who knows his(her?) stuff might tell you a certain combo of wheel/tire just won't work even though you think it might.  The larger the offset, the less likely you can satisfactorily mount the widest advisable tire, like the 225/55-15,  225/50-16, 225/45-17 or 225/40-18 variety.  By the way, all these tires I've mentioned are upgrade fits off a compatibility chart you can produce at:

http://toy4two.home.mindspring.com/tire.html

  From what I read on the forums, a lot of people have upgraded to 16 inch alloys between 7 & 7.5 inches wide and mounted 205/55-16 rubber of various brands.  This really seems to be the most sensible upgrade.   But there are a fair number of 17x8 and even 18x8 or 8.5 inch upgraders with 225 wide tires.  And… like I said above, some have related clearance and appearance problems with offsets too far off OEM.  Supposedly Neuspeed has 19 inch alloys on their Passat project car!  A best fit for the widest tire just might be with a VW factory alloy.  Going to the widest tire (225) on a 7 inch wide factory alloy with 45 mm offset would probably be a near perfect fit.  Remember, the further you go from stock specs (rim width, rim diameter, tire width, offset, lowering springs, etc.), the more clearance and bulge out the wheel well problems you might encounter.

  Here's my personal experience.... I bought my Passat in November 1998 purposely with stock steel wheels because I intended to immediately mount 16" alloys and 205/55 tires.  I didn't look long because I saw exactly the type of wheel I was looking for in a Discount Tire Direct ad in European Car magazine.  They were 16x7 Audi A4 replicas made by an Italian company named "MiM".  The price was VERY right at $129 each for 16x7 inch.  They also have the same wheel at 15x7 for $109 each which some have purchased as a bargain upgrade by keeping the factory tires.  I didn't want the very expensive VW upgrade alloys and I considered some of the other wheels available to be too flashy for my taste.  I’m not a kid anymore and I wanted a conservative look, not the "Hey, LOOK at my Car!" appearance.   I didn't have to pay shipping because I dealt with my local Discount Tire (also known as American Tire in some areas) shop here in San Diego.  They ordered in the alloys from the corporate warehouse as part of my wheel/tire deal.  I had an ulterior motive, I wrangled about 70% trade-in value for my brand new factory Michelins towards the new 16" tires.  You can't get a deal like that on the internet!  The alloys came with matching color lug nuts and plain flat center caps and little "MiM" stick-on disks which I chose not to attach.  Both Discount Tire Direct and Tire Rack carry this replica alloy although I've heard maybe Tire Rack is dropping the replica alloy.  The one that Tire Rack sells (if they still have them) is called the "ATP A5".  If I remember correctly, Tire Rack's ATP A4 replica is German made and they sell them for the exact same price as Discount Tire.  Here's an interesting sidelight to this story...  When Discount Tire Direct first in ordered these alloys in last fall, they advertised them as A4 snow tire rims for the folks in the frozen north and they intended to stock them only in the fall & winter.  I was told by their rep that to their amazement, they flew out of the warehouse to places like Arizona, California and Florida and were sold out in less than a month.  I hit the window just right with my purchase in mid-November.  They were sold out from Dec 1st to Feb 1st when the reorder shipment arrived.  Now they are stocking them year round.

  Another great private website I know of has a gigantic display of wheels that will fit both the Audi A4 & Passat (same specs), check it out:

http://www.webspan.net/~nsw/Wtpage/

  Lots of choices there but I don't think there are any links to where to buy them!  You'll have to do your own search for them once you identify a brand and/or style you might like.   The website also links to Tire Rack & Discount Tire and they have loads to chose from: