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Discussion Starter · #1 ·
How bad is it to run with mixed wheel sizes for a week? 17" (with winter tires) in front and 18" (with all season) in rear?<p>I think that the overall wheel diameter is supposed to be the same so what kind of issues can this cause if run gently?<p>I have 2 bent front rims (well 3 actually including one rear wheel) I want to send out to have straightened and refinished. Tried balancing but the shop said the rims were bent. The tech has an 04 SR and has had this same problem himself (bent rims) and is suggesting going aftermarket.<p>Would prefer to stay with OEM rims but the rim shop needs them for about one week to do the work. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/frown.gif" BORDER="0">
 

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You won't hurt anything except maybe wear your snow tires a little more with the warm weather. <p>I don't know how people are bending stock rims so easily. I have 18" pegs and regularly drive on REALLY rough roads, I even ruined a tire last year on a storm drain that was sticking up a couple inches on a road that was being resurfaced. Never bent a rim though...
 

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If the overall diameter is the same you should be fine.<p>If it is NOT i'd be worried about burning up the haldex and ruining angle gear collar thing.<p>If they're different diameters the car would probably drive very wierd.
 

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Discussion Starter · #6 ·
The tires are all stock size: winters are 235/45/17 (pretty sure this is the size) and summers are 235/40/18.<p>I'm quite careful to try and avoid potholes so I'm pretty sure the wheels were already bent when I bought the car last November but I had the 18" Pegs on for about one week before I swapped in the 17" Pegs with winters.<p>Noticed a little vibration when I first got the R but thought they just needed balancing. Finally got this looked after recently and was advised of the bent rims.
 

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Discussion Starter · #7 ·
Re: (Turbos60)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Turbos60</b> »</i></TD></TR><TR><TD CLASS="quote">Richard, where are you driving? I have 18" pegs and havent had a single issue around here.</TD></TR></TABLE><p>I'm hoping that will be the case once they repaired!<br>
 

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Re: (VOGZ)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>VOGZ</b> »</i></TD></TR><TR><TD CLASS="quote"><br>I don't know how people are bending stock rims so easily. I have 18" pegs and regularly drive on REALLY rough roads, I even ruined a tire last year on a storm drain that was sticking up a couple inches on a road that was being resurfaced. Never bent a rim though...</TD></TR></TABLE><p>I'm guessing a well made tires with a stiff sidewall will protect the rim much better than a crap tire. I've bombed along really bad roads too, and doing ice racing on a frozen lake is anything but smooth - I have pictures off completely bottomed suspension as well as fully extended to prove it. Zero bent rims probably thanks to good Bridgestone tires.
 

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Re: (S60inToronto)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>S60inToronto</b> »</i></TD></TR><TR><TD CLASS="quote">The tires are all stock size: winters are 235/45/17 (pretty sure this is the size) and summers are 235/40/18.<p>I'm quite careful to try and avoid potholes so I'm pretty sure the wheels were already bent when I bought the car last November but I had the 18" Pegs on for about one week before I swapped in the 17" Pegs with winters.<p>Noticed a little vibration when I first got the R but thought they just needed balancing. Finally got this looked after recently and was advised of the bent rims.</TD></TR></TABLE><p>The diameter of the 18s are only 2 tenths of an inch bigger than the 17s or .3% different. You won't hurt your awd with a .3% difference front to rear. Now if it was 5-6% I'd be worried.
 

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Re: (Warpedcow)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Warpedcow</b> »</i></TD></TR><TR><TD CLASS="quote"><p>I'm guessing a well made tires with a stiff sidewall will protect the rim much better than a crap tire. I've bombed along really bad roads too, and doing ice racing on a frozen lake is anything but smooth - I have pictures off completely bottomed suspension as well as fully extended to prove it. Zero bent rims probably thanks to good Bridgestone tires.</TD></TR></TABLE><p>I run Kuhmo SPTs on my 18s and Dunlop 3Ds on my 17s...Not crap tires on the 18s, but definitely not top of the line either.
 

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Re: (Warpedcow)

Haven't bent any rims even with my 5 tire month, but i def recommend the GY Eagle F1 (which just bubbled) vs the General Exclaim UHP (which blew out) on my 18s.<p>Still thinking of switching back to the 17s and selling the 18s.
 

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Re: (VOGZ)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>VOGZ</b> »</i></TD></TR><TR><TD CLASS="quote"><p>The diameter of the 18s are only 2 tenths of an inch bigger than the 17s or .3% different. You won't hurt your awd with a .3% difference front to rear. Now if it was 5-6% I'd be worried.</TD></TR></TABLE><p>I would go by RPM (revs per mile) as quoted by the manufacturer.<p>For the OE Rossos, the difference is 5 RPM (799 vs. 804) or 0.622%<p>Shouldn't be a problem.
 

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Discussion Starter · #13 ·
The damage may have occurred with either the OEM Rossos or the Toyo Proxes that's one there now....not sure. I assume the OEM tires were replaced due to wear as the car had 42K miles when I bought it.<p><br>Thanks for the input. If the weather's good tonight the two 18's are coming off and going in tomorrow for repair.
 
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