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#1
06-21-2005, 10:42 AM
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Air pressure for 4.6 replicas and proxies?
I recently got a set of 20" 4.6 replicas with Toyo Proxies from truck accesory outlet to replace my 18" 3.0 sport rims. I like them a lot but find the ride a lot more harsh than before. I was expecting this a little bit, but it is harsher than I thought.
Does anyone have any suggestions for air pressure to make the ride more smooth. Thanks in advance. 
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#3
06-21-2005, 05:20 PM
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i went from 18 nonsport to replica 20's with the same tires. Initially they felt harsh but i'm more than used to it and feels alot smoother on the highway. The tirepressure should be the same as manufacture recommended no matter how big/small your rims are.
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#4
06-21-2005, 05:24 PM
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You should probably be running 32 psi all the way around unless you a carrying a lot of additional weight...........Phil
__________________
2011.5 Dinan ///M3: SSII DCT Competition Pkg Convenience Pkg Premium Pkg 2 Heated Seats Enhanced Premium Sound Black Kidney Grills BMW M Performance Steering Wheel BMW Carbon Fiber Performance Spoiler BMW Aluminum Pedals Dinan Exhaust Dinan Mid-Exhaust (x-pipe) Dinan Carbon Fiber Intake Dinan Performance Tune Dinan Pulley Kit Dinan CH-R Wheels Dinan Carbon Fiber Strut Tower Braces Arkym Front Lip Carbon Reflectors Lux H8 V3 Brembo 365mm BBK
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#5
06-21-2005, 05:35 PM
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18 to a 20" rim and a much wider tire (unless you kept the same width which will look sort of silly on a 20" rim) = harsh ride
when I put my 18's on in the winter it feels like another car. Check the tire itself for a pressure spec.
__________________
An unwavering defender of those I see worth protecting. "promote the general welfare, not provide the general welfare" We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.
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#6
06-21-2005, 06:05 PM
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i do 32 front 39 back
those are specs posted on your doors
__________________
2008 E82 135is JB2 Alpine White / Lemon 2008 E90 335i JB2 Monaco Blue/Grey 2007 E85 M Roadster Black/Black 2006 E60 550 w/ M Kit Silver/Black 2003 E46 M3 SMG w/ VMR V715 19's Blue/Black 
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#7
06-21-2005, 11:09 PM
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Prices
I just bought 20" replicas on ebay for $915. I got Toyo proxies on it for another $1100.
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#8
06-25-2005, 08:45 AM
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I usually run the front tires within acouple psi of max because that is where most of the weight load is - the rear I run less unless I'm towing somthing - this usually keeps the actual rotation diameter under load close to the same, front and back - but I don't know what BMW says - just my experiences with my Broncos and other cars - Of course, I've been wrong before and most likely will be again.
__________________
Mark         _______________________________2001 X5 4.4i topaz blue/sand Sport, complete Dinan S2  , hitch, V1, tint, BSW Stage 1, Alpine INA-W910BT___________ Life is not fair! You can't protect people from their own stupidity! Laughter makes life worth living
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