I changed my sidelight bulbs to LED a couple of years ago, never had a problem.
Also fitted LED Daylight Driving Lights in the scoops below the fog lights, same, no problem....
As an experiment I drilled the orange reflectors next to the indicators and fitted LED's wired to the indicator wiring,
creating an unneccesary extra side flasher!...............never had a problem still works.!
I have 93/94 series two, I would just stay with the supplied 16" and spend the money on the best tyres
Don't forget the car is twenty odd years old
My twopennorth also
As nobody has replied,here is my guess,assuming it's a petrol engine not diesel
Bear in mind I know nothing about IS models'
Cold start injected engines have some sort of overfuelling device to provide a rich starting mixture.
As your runs right with this rich mixture, when the 'overfuelling' times out, the mixture is
adjusted for normal running I.e leaned off.
if you have an air leak weakening the mixture more than the ECU can compensate for
this may cause multiple misfires.
Assuming spark plugs, Ok.coils, OK
Just my 2cents worth..
cheers
'
Did you check fluid condition and level when idling hot?
First job, change trans fluid and all other oils and filter
Only use Toyota T4 trans fluid
I have a friend with a 1990 model still runs well
My '94 still runs like new [well nearly new!]
THE ORIGINAL POST WAS 2002, HOW DID MISS THAT!
Hope i'm not loosing it...
Autoglass did mine OK but they could not get a screen with the blue tint
I settled for green, can't see much difference.
Think they may be hard to get, settle for any colour you cant see much difference.!!
As above,if you prefer Bondaprimer, try Hammerite Red Oxide, this looks like a thicker version of Bondaprimer
It will brush or spray [needs thinning, it asks for Hammerite thinners but I used 2pack thinners and it sprayed no problem]
I've used both can't tell any difference
Before priming I would treat the whole rusty area with Vactan, this is the best rust converter/sealer
I have used.
Try to get it under the window weatherstrip, to avoid any more creeping rust.
Removing the trim is not a nice job,avoid it if you can.
If there is any sort of crater left, fill with bodyfiller and sand smooth then prime with 2 pack primer
IF you can get to it from the back, lightly hammering it out to a shallow dent and then body filler
to level it is as good as a garage will do.[use a piece of wood in front of the hammer if it helps]
If you haven't done it before, don't go mad with the filler, fill and flat down, 80 grit paper
and fill again if needed
Check the power steering fluid is topped up.
A friend with a series one LS had this problem, dealer changed the belt idler still squeeked.
Topped up the fluid whilst engine running [and squeeking] went quiet, was OK thereafter!