SW17LS

Then I guess you should hang out on the 2IS forums huh?

Why come to the 4 GS forum to troll and dig up a 4 year old thread?!

AL13NV8D3R

My 2009 IS 350 RWD had 225/45 17in fronts and 245/45 17in Dunlop rears while the 2014 GS 350 with fsport package has 235/50 19in fronts and 265/50 19in rears with Michelin. So its hard to believe that an IS 350 with less traction out handles a 4GS with better suspension rear steering and supurior rubber width and compound. Even when tested by professional who test cars on a daily basis confirms that the 4gs goes around the slalom faster than an 2IS.

What are you smoking? I want some!

peteharvey

The old 2IS is only 3,400+ lbs.
The new 3IS is 3,700 lbs.

The old GS 3,570 lbs.
While the new 4GS is 3,840 lbs.

The old 2IS is lighter, and a shorter overall length and shorter wheelbase, plus narrower width and track for a lower polar moment of inertia - the more the mass is concentrated to the center, the more quickly it will yaw/spin to change directions.
The old 2IS also has a lower center of gravity than the new 4GS.

If you test it back to back on the same day, under the same conditions, I think 2IS will have edge in both straight line, and around corners.

The drawbacks of old 2IS include tiny interior, excessively firm ride, and at the limit, the 2IS handling is dangerous because the tail will snap out very suddenly, rather than very controllably like 4GS.

1999-06 1IS has poor straight line speed, and very poor ride and sound insulation, but 1IS at below 3,000 lbs - is the best handling of the lot.
An even lighter Mazda MX-5 will do even better...
.

ThomasGS4

iTrader: (19)

Let's not forget those melting dashboards and door cards! Yikes!

JDR76

2013 IS250 RWD 3435 lbs
2014 IS250 RWD 3461 lbs
26 lbs difference.

2013 IS350 RWD 3527 lbs
2014 IS350 RWD 3593 lbs
66 lbs difference.

2013 IS250 AWD 3651 lbs
2014 IS250 AWD 3649 lbs
-2 lbs difference.

2013 IS350 AWD 3703 lbs
2014 IS350 AWD 3737 lbs
34 lbs difference.

Source: Lexus

JDR76

2011 GS350 RWD 3795 lbs
2014 GS350 RWD 3795 lbs
0 lbs difference.

2011 GS350 AWD 3965 lbs
2014 GS350 AWD 3980 lbs
15 lbs difference.

Source: Lexus

TeamBone6

This subject is similar in nature to the fact that two identical rifles firing ammunition from the same box will almost always have different accuracy levels. Minor variations can sometimes make significant differences. Only the variables in this discussion start out significant. My wife drives a 2015 IS350 C (convertible) and I drive a 2015 GS350 F Sport (RWD). I believe the only significant difference in our drive train is the fact that the IS350 C has a 6 speed transmission and the GS350 F has an 8 speed transmission. Despite my car's heavier weight it gets 3 MPG better fuel economy and has averaged 1/10th of a second faster in personal 40-80mph testing. It is amazing what those two extra gears can do to make up for the extra weight. Too bad the IS350 C doesn't also come with the 8 speed. Also, the GS spanks the IS in the handling department, even when my GS is in ECO Mode. I think this is largely based on the OEM tires that are on both cars. At any rate, both cars are enjoyable to toss around and they both spank my 4x4 Suburban in handling and fuel economy. For long road trips though, nothing beats the Suburban.

gt500tony

Lmao sorry man. Not trying to troll. My family and i own two lexus. 2010 gs350. And i own a 2007 is350.

I came off like a jerk my bad.

gt500tony

You nailed it. My asian azz Couldn't say what you just did. Good stuff.

gt500tony

My phone created a indent in the melting dash. Free phone holder.

Cars super asian hood classy i promise.....

My old 2000 gs400 was reeeeeal classy to. Tons of tacky issues.

If i get around to it i might pick up a 2016 gs350 f sport so i can go slower in a new car with the same engine.

gt500tony

What im a smoking? The same stuff i sell to you and your kids. Meth! You know this already. Lol i'm joking.

Would it baffle you to know you can put 295/30/19 on aftermarket rims on the rear of a 2007 is350? With no fender roll?

Stock for stock a new 2016 gs350 f sport could probably out handle a non fsport 2006-2013 is350.

Give both cars same mods...... Is350 dominates.

The 2is is350 f sport out handles the 3is f sport when both are stock.

peteharvey

These figures are not right somehow.
Over the years, both compact and midsize cars from the major luxury players like: C & E Class, 3 & 5 Series, IS & GS etc - have increased in wheelbase, height, and weight.

Only since the current model 2015 C Class which uses small capacity turbos and part aluminium chassis has that trend seen weight go downwards.

The 4GS & 3IS actually belongs to the previous generation of motor cars where weight actually went upwards.
I'm sure 2017 5LS will also use part aluminium chassis, and will also see weight start to fall; hence the 4LS' 10 year model cycle, and the delayed release of the 5LS.
This part aluminium chassis technology will trickle down to the 2019 5GS and 2020 4IS.

For now, I see so many different internet specs on weight for 2IS, 3IS, 3GS and 4GS - I don't know what to think, but I'm sure the current model IS & GS are noticeably heavier than their predecessors, and unfortunately, this affects both straight line speed, and handling.

However, don't feel sad, because 3IS & 4GS has much better at the limit behavior than their predecessors.

I just tested my 3GS against 4GS, and I must say that 4GS has both faster turn-in and more terminal grip than 3GS, but that is largely due to the firm and flat suspension and the fat low profile tires.
My 3GS rides far more compliantly than my 4GS.
Both cars are great, but in different ways.
Overall, I like the 4GS a little better, because the 3GS looks a bit dull, and the wheels look as though they are mounted more inboards on a narrower track...