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Old 10-29-09, 10:01 AM   #1
nomobmw
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Default Has anyone ran 275/35-18 tires in the rear with stock wheels?

I am considering dumping my crappy stock Bridgestones for some Michelin Pilot Sport 2s and saw that I could run wider tires in the rear on the stock rims. I'm not really interested in new rims as I don't want to go much lower profile for ride quality's sake but I am interested in getting more torque on the ground.

Of course, the drawbacks are not being able to rotate, but has any one run a setup like this on their 450h and did you have better grip from a standstill? Currently if I slam the throttle from a stop the traction control generally steps in and I'd prefer not to turn it off and burn out. .
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Old 10-29-09, 12:14 PM   #2
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stock wheels are 8" wide right? imho 275 would be way too wide
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Old 10-30-09, 08:06 AM   #3
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Well, I'm basing it on TireRack stating that as an alternate fitment. I'm sure that it will have a little hang over the rim, but since I've got roll-control I have no choice but to go with the stiff side-walled runflats.
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Old 11-03-09, 05:09 PM   #4
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Default roll control req's runflats?

Quote:
Originally Posted by nomobmw View Post
Well, I'm basing it on TireRack stating that as an alternate fitment. I'm sure that it will have a little hang over the rim, but since I've got roll-control I have no choice but to go with the stiff side-walled runflats.
Nomobmw - when you say roll-control, are you referring to the traction control? I've got this and wanted to move away from the runflats but your post suggests the car is designed to utilize the stiffer walled tires. Where can I read more about this?

Thanks
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Old 11-04-09, 08:57 AM   #5
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man0fsteel:

Actually, the problem is much more "overt" than that. . roll-control is called Active Stabilizer Suspension System in Lexus-speak and it basically has electric motors attached to the stabilizer bars that torque them in such a way as to counteract body roll when you are cornering. The net effect is it makes the car's handling MUCH better and eliminates the need to counteract body sway when turning. It also is a better compromise than having extraordinarily strong anti-sway bars as it allows for a smoother, more comfortable ride when high performance handling is not required.

If you have this system, however, the electronics package and supplemental battery take up the space in your trunk where your spare tire would normally go which leaves you with no choice but to use runflats.

Here is the Wiki: http://en.wikipedia.org/wiki/Active_...pension_System

and here is the Lexus video on the system:

http://www.lexus.com/lexus-share/dem...s/asss_nav.htm
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Old 11-04-09, 02:09 PM   #6
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Quote:
Originally Posted by rominl View Post
stock wheels are 8" wide right? imho 275 would be way too wide
Agreed. For a 275 tire, I would suggest at least a 9.5" - 10" wide wheel. A 275 on a factory wheel would hang over quite a bit and look odd, IMO.
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