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Old 06-15-2009, 08:24 PM   #1
Scooby Newbie
Member#: 199287
Join Date: Jan 2009
Default want to know effect of wider trackwidth with steelies

I have searched the forum....and most of the topic are about mags/rim offset...but not about Steel wheels

i'm the second owner of my car....and when i got the car from the dealer....they put winter steelies for me....the 195/65R15 steelies looks more "sticking out" (closer to the fender/smaller offset) then stock WRX 205/55R16....

i couldn't really find the offset value on the steelies...looks like 15x6 et50mm or less....and stock wrx is 16x6.5 et55mm

so definitely, the track width with the steelies is longer....what would be the negative effect? result in more stress in the bearings? what else could wear out quicker?....

and if i want to buy new mags...is track width one of the factor to consider?

how long does subaru's bearing usually last?

anyways...it's only for a winter...but would appreciate if someone can answer my concern
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Old 06-16-2009, 11:54 AM   #2
Scooby Guru
Member#: 25187
Join Date: Sep 2002
Location: So. CA
'08 Foz Prem TGM
'10 Challenger R/T Blk


....I'm not sure why you needed to open another thread on this (you already have one). Also, WHEEL composition (i.e. aluminum, steel, magnesium, etc.) is a moot point when discussing offset. .....making most of those other threads that talk about ALUMINUM WHEELS + offset, relevant.

Now, if the offset is in question regarding your steel wheels and you are curious are to what it is, simply measure it yourself. A quick Google search led me to this:


It has pictures and step by step instructions. It's simple math and even tells you how to convert to mm if you are measuring in inches.

As for wheel bearings, it really depends on a number of factors. Obviously, a lower offset changes the way the load affects the wheel bearings. How this may negatively impact bearing life in your situations is anyone's guess. .....the lower the offset, the harder you drive, etc. will all play roles. Other considerations of changing the offset are its affects on things like scrub radius. Basically, you are changing the suspension geometry. This can translate to handing characteristics that you may or may not notice. .....again, depending on several factors.
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Old 06-16-2009, 01:33 PM   #3
Alex Wetmore
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Member#: 213196
Join Date: Jun 2009
Chapter/Region: NWIC
1998 Outback Sport


My car also came with generic non-Subaru steel wheels. The biggest issue that I had with them was fender rub on tight corners when the rear of the car was loaded down. I put on some stock Subaru wheels (bought from the classifieds here) and my fender rub issues are gone. The wheels sit visibily closer to the centerline of the car.

I haven't driven enough with the correct wheels to comment on any handling changes.
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Old 06-16-2009, 09:46 PM   #4
Scooby Newbie
Member#: 199287
Join Date: Jan 2009

thx.....my set didn't rub the fender....but you can tell that it's much closer to the fender than the stock WRX mags....

thx....i know i started 2 threads.....just want to hear more opinion from more ppl
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