Help With Rim & Tire Sizing

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  • Seriousblaue30
    Noobie
    • Feb 2026
    • 3

    #1

    Help With Rim & Tire Sizing

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ID:	10155482​Hey All! First post here on the Forum.

    I recently bought a pretty 89 that came with these Alpina-style 16s. The tires on it currently are 225/45R16 93W.
    I like the look of the alpinas but I'm more tempted to buy some RS reps for the car. I added a screenshot of what I was thinking of getting. The specs for the RS reps are
    Size : 16X7.5
    Bolt pattern : 4X100/114.3
    Offset : F&R: 35MM
    Hub Bore : 73.1mm
    :
    Will these fit on the car as it is lowered and with the same tire spec, or is there another rim and tire spec that might work a little better for handling? I bought the car with my dad, and he doesn't seem completely sure those rims and tire specs will work with the car as it is, lol. I'd love to get any advice on making sure the rims and tires fit before I spend the money. All help is greatly appreciated!​
  • McGyver
    R3V Elite
    • Jun 2009
    • 4514

    #2
    This is going to depend on the offset. At 35, you should be fine.

    Use this site to visualize the current setup and your proposed setup:
    Alloy Wheel & tyre fitment calculator - it calculates inset, poke, speedo error, tyre stretch and loads more.


    Also, are you sure you want to spend your money on reps? The wheels on the car look pretty cool. I bet if you polished the lips and maybe painted the centers, they'd look even better.
    sigpic
    1987 - 325i Convertible Delphin Auto [SOLD], 325i Convertible Delphin Manual [SOLD]
    1989 - 325i Convertible Bronzit m30b35 swapped [SCRAPPED], 325i Sedan Alpine Auto[DD]
    1991 - 325i Coupe Laguna Manual [Project], 535i Sedan Alpine [SCRAPPED]

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    • digger
      R3V OG
      • Nov 2005
      • 6007

      #3
      problem with 225/45/16 is slim pickings regarding good tyres
      89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

      new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

      Comment

      • MrBurgundy
        R3V Degenerate
        • Mar 2012
        • 5372

        #4
        Yeah, I've been wanted to move up to 225 as well but like digger said, tires are expensive and almost all options i see 200 or less for TW

        Honestly the indy 500 205/50/16 grips crazy style
        Current Collection: 1990 325is // 1987 325i Vert // 2003 525i 5spd // 1985 380SL // 1992 Ranger 5spd // 2005 Avalanche // 2024 Honda Grom SP // 2024 Yamaha XSR700 // 2025 Jeep Wrangler Rubicon X

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        • Northern
          R3V Elite
          • Nov 2010
          • 5151

          #5
          Agree with all the 16" comments. I ditched mine for this reason and went back to 15"
          If you do go 16, plan to run 205/50R16 as they're the only thing that's still somewhat available.

          RS reps you posted will need hubcentric rings and spacers - up front for strut clearance, and in the rear just to match/look good. Maybe 15mm worth. I'd wait to test fit the wheels/tires and play with some washers.
          Originally posted by priapism
          My girl don't know shit, but she bakes a mean cupcake.
          Originally posted by shameson
          Usually it's best not to know how much money you have into your e30

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