Tango

Just noticed a post on the American site that says the new Is doesn't have any Castor and Camber adjustment Can this be correct? Only toe???

Unique opportunity to take this by the horns then. Tony, Still waiting for the wheels...can we fit the springs at yours? What do you need in terms of original geometry data? Is it best to arrive with the new rims and tyres on the car or the original 17"?

Will look forward to it. Similar mods have already been done in the States on both the Lexus IS250 and Is350 models, but as far as I know, without any post fit geometry checks or monitoring.

I have a fast car So will you be recommending a geometry change? You know I'll be on your doorstep if that's the case Since this a new model then i recommend the Geometry is imaged anyway so any future wear has a fingerprint to calculate what angle is the criminal. The new wheel/tyre combination will definitely need to be accounted for Geometrically, historically less Camber and toe. Exactly how much on the steer axis is hard to calculate in advance since there is no data for the SJI/KPI inclination, this can only be imaged at the time of the Geometry. Tony, I'll call you to book the car in when the change has been completed. I may as well be the guinea pig....

I have a fast car So will you be recommending a geometry change? You know I'll be on your doorstep if that's the case

...and by my reckoning you'd have to be somewhere between Australia and New Zealand. Soloman Islands??? You should be so lucky

No spacer....

I know what the slacker is up to They'll be fine at the front but you'll need a 15mm spacer at the back for any real effect cant say i know what tango is up to but rubbage comes to mind i have read about having to use 225 tyres on the front to prevent rub Well the rolling radius front and rear is incorrect, with 235/35 front aspect then the rear should be 255/30 aspect. Next i would need to know your intentions for the drive.... road, race, display? i think the is250 has a different aspect from front to rear as standard Oooops i was reading this as the wrong model Less of the slacker Michael or I'll pull my finger out of this Prudhoe Bay Pipe... Bazza you're correct the fronts need to be 225/35/19 Wasn't planning on a spacer with the 19x9.5's Tony ...it's a road car, just wanted to go bigger than the optional 18" and it'll look a little silly if I don't drop it a bit.

Offsets are +38mm on the fronts, +42mm on the rears.

Tony, In the process of changing the wheels and springs on my second generation Lexus IS, and would appreciate your advice on the possible consequences, if any, and whether you would advise any geometry changes to the standard set up. Changes are 19x8.5 Front 19x9.5 Rear (standard is 17x7.5 & 17x8.5 on the SE-L, or 18" optional dia with same widths) Tyre sizes Front 235/35/19 Rear 275/30/19 Suspension mod is Eibach Pro Kit spring replacements for the 250, which gives a drop of 1.4" at the front, 1" at the rear.