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Discussion Starter · #1 ·
Everyone ever consider doing an R brake conversion for their XC90? It's a fantastic brake system, and fairly affordable through dealers (compared to Brembo aftermarket kits).
 

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Discussion Starter · #3 ·
Re: R Brembo Brake Conversion (1v8volvo)

I don't know if it's a straight swap, but I'll try to get an estimate on the calipers/rotors/pads and post it.<p>I'm hoping it is bolt on, though it may limit the wheel fitment without spacers.
 

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Re: R Brembo Brake Conversion ([email protected])

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>[email protected]</b> »</i></TD></TR><TR><TD CLASS="quote">Everyone ever consider doing an R brake conversion for their XC90? </TD></TR></TABLE><p>The R uses a 13" caliper. Doesn't the XC90 use a 16" caliper? <p>If so you would have to shim the R Brembos out 3" or run much smaller rotors to compensate. That doesn't sound like a good idea or a good fit.
 

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Re: R Brembo Brake Conversion (StaggRLee)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>StaggRLee</b> »</i></TD></TR><TR><TD CLASS="quote"><p>The R uses a 13" caliper. Doesn't the XC90 use a 16" caliper? <br></TD></TR></TABLE><p>I don't think a Bugatti Veyron runs a 16" caliper.
 

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Re: R Brembo Brake Conversion (StaggRLee)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>StaggRLee</b> »</i></TD></TR><TR><TD CLASS="quote"><p>The R uses a 13" caliper. Doesn't the XC90 use a 16" caliper? <br></TD></TR></TABLE><p>Are you talking about rotor size?? <p>
 

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Re: R Brembo Brake Conversion (awdnut)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>awdnut</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Are you talking about rotor size?? <p></TD></TR></TABLE><p>Yes. Rotors. Doh!<p>I recalled reading somewhere the XC90 had 16" brakes. Maybe on the V8?<p>If the T6 has 13" fronts it should be a simple swap if the hub mounting and rotor offset is the same - the fronts matter way more than the rears anyway - but wouldn't you be likely to change the brake bias? <p>This may not be a good thing with ABS and DSTC. You could install a portioning valve if it does, but that's getting pretty complex and spendy.
 

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Discussion Starter · #11 ·
Re: R Brembo Brake Conversion (StaggRLee)

I'll have to look at the options. I believe the difference between XC90 (non V8) and R is the number of pistons in the caliper.<p>Are they truly needed? Well, unless you have an 850 or an S70, probably not. However, it **should** improve braking performance, so I'm curious.
 

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Re: R Brembo Brake Conversion ([email protected])

The caliper bracket bolt is different on the S60R/V70R/XC70 vs XC90. <br>On the XC90, it's shorter, but has larger diameter. Versus a longer but skinnier diameter bolt on the S60/V70/XC70. <br>It was easy for the XC70 to be retrofitted with XC90 brakes, since all I had to do was drill a larger hole in the existing caliper braket. But will be harder to do the reverse for XC90. <p>My conversion to XC90 V8 brakes:<p><br> <A HREF="http://forums.swedespeed.com/zerothread?id=62472" TARGET="_blank">http://forums.swedespeed.com/zerothread?id=62472</A> <p><IMG SRC="http://img211.imageshack.us/img211/6485/2623290313b2623292553b200432028small29gd9.jpg" BORDER="0"><br><IMG SRC="http://img211.imageshack.us/img211/6715/2623290313b2623292553b200672028small29wx8.jpg" BORDER="0"> <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0">
 

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Re: R Brembo Brake Conversion (024tnfi)

While 024tnfi went the other way (XC90 > XC70), going from an R to the XC90 would seem to be problematic. I haven't personally tried the fitment, but, I wouldn't hold my breath on the success. And, there are alternatives (to trying to play R brake system integrator) out there. The approach that worked for me was to go with larger wheels (18x8), tires (255/50-18) more sticky tread compound (Michelin Diamaris), and Ceramic brake pads. That combination got the brake distance (60-0 mph) down around BMW M3 territory (~115 ft).
 
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