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Have since confirmed that springs / struts installed on vehicle with the Sport Tuned Suspension, are different part numbers from vehicle without the Sport Tuned suspension. Appears that spring / struts are the only difference regarding part numbers. All other part numbers are the same part number for both, vehicle with & without Sport Tuned suspension (front upper mounts with insulator, lower spring insulator, rear upper and lower spring insulators and bump stops etc).
I won't say this is exhaustive or 100% accurate, I just pulled out the obvious suspension bits applied to the 2013 F-Sport 2IS vehicles. Many of the hard parts (minus springs and dampers) are on the IS-F. Steering ECU and interior frills are not listed here.
I was surprised to see they changed the rear spindle, front lower control arms and a bunch of bits in the rear.
Snap shot is springs, dampers, sway bars, toe links, A-arm, spindle. Anyone have access to both?
These are the dampers on the 2013 F-Sport. IMO they are keepers. Very compliant. They hug the road, use the full suspension travel, are pretty firm in regards to bumps, road surface, they do a pretty phenomenal job of keeping the tire connected to the road.
No passengers complain of it being too stiff, but I must state it is mildly jarring.
Front: From 2010-08 to 2013-04. B000005 0; GSE20,21; MARK 48510-53260,SUSPENSION-SPORTS; 48510-53260 -> 48510-80539 RH
From 201008 to 201304. B000005 0; GSE20,21; MARK 48520-53170,SUSPENSION-SPORTS; 48520-53170 -> 48520-59655 LH
Rear: Tokico #48530-53280, which seems to map over too this 48530-80574 X2
JM2C but I ran lowered cars for 25 years and I'm over bottoming out, dragging parts, fixing damage and all that comes with it. As the car is right now, it bottoms out the dampers on occasion and has topped out the dampers too. That said, if it were lowered I'd bounce off the road and that's no fun. Im just saying this is a good balance for me and where I drive. It may not be the best for everyone and where/how the car is used.
The temptation is to add the blue aftermarket F-Sport springs to lower just a bit but they are progressive verses linear and linear rates are more predictable which is what I prefer. That said, I'll likely leave the springs alone.
2013FSport, thank you for posting the additional information with regard to suspension components included with vehicle (RWD IS 350), equipped with the F Sport package (not the aftermarket F Sport components). I appreciate your time and doing so.!!
Interested in in installing the suspension components associated with the Sport Tuned suspension setup (see below). The listed part numbers are different than vehicles without the Sport Tuned suspension. Believe the springs included with the Sport Tuned suspension are linear and not progressive as the "Aftermarket" F Sport blue springs (or that may be the case as well with the OEM F Sport package and aftermarket F Sport "blue" springs, but unsure);
48510-80257 - Front Right Shock 48520-59285 - Front Left Shock 48131-53171 - Front Spring (Qty 2) 48530-80289 - Rear Shock (Qty: 2) 48231-53151 - Rear Spring (Qty: 2)
Was interested in the following; Reply # 13 by carchitect "Sport suspension models also get a revised steering rack with a slightly different gear ratio (13.6:1 vs 13.5:1)"
Can a member confirm if there is a difference in steering ratio, and would installing the shocks & springs from a vehicle with Sport Tuned Suspension, into a vehicle without Sport Tuned suspension (2008 IS 350 base or Luxury package RWD), impact steering or anything else if there is a difference in the steering gear ratio?
The steering rack is different between AWD and RWD, but not between RWD with and without Sport Package.
Jeff
Understood, Thank you Jeff for following up and confirming that the power steering ratio is the same, installed in 08 IS 350 RWD vehicle with ST package (Sport Tuned Suspension), and base 08 IS 350 RWD vehicle without Sport Tuned Suspension. I appreciate your time and doing so!
Would the same power steering ECU part number (89650-53082 - 2011 - 2013 IS 350 with sport package.), be same part in 08 IS 350, with revised part number in 2011, or completely different power steering ECU?
These are the dampers on the 2013 F-Sport. IMO they are keepers. Very compliant. They hug the road, use the full suspension travel, are pretty firm in regards to bumps, road surface, they do a pretty phenomenal job of keeping the tire connected to the road.
No passengers complain of it being too stiff, but I must state it is mildly jarring.
Front: From 2010-08 to 2013-04. B000005 0; GSE20,21; MARK 48510-53260,SUSPENSION-SPORTS; 48510-53260 -> 48510-80539 RH
From 201008 to 201304. B000005 0; GSE20,21; MARK 48520-53170,SUSPENSION-SPORTS; 48520-53170 -> 48520-59655 LH
Rear: Tokico #48530-53280, which seems to map over too this 48530-80574 X2
JM2C but I ran lowered cars for 25 years and I'm over bottoming out, dragging parts, fixing damage and all that comes with it. As the car is right now, it bottoms out the dampers on occasion and has topped out the dampers too. That said, if it were lowered I'd bounce off the road and that's no fun. Im just saying this is a good balance for me and where I drive. It may not be the best for everyone and where/how the car is used.
The temptation is to add the blue aftermarket F-Sport springs to lower just a bit but they are progressive verses linear and linear rates are more predictable which is what I prefer. That said, I'll likely leave the springs alone.
Jeff, interested if you may know where all the "bump stop" bushings are located on the 06-2013 IS350, and if the ones installed in vehicle with the ST - Sport Suspension / X Package, are different than those installed in vehicle without. Are the bump stops only located with strut assembly as show in Photo 1, or also located elsewhere on vehicle, as seen in Photo 2;
PHOTO 1 (Part 48341-53010)
PHOTO 2 ( Part 48306-60201 referenced by 13 in photo - Axle bump stop for GX470)
12-21-20, 06:17 PM
