The spacers for the rear ride height are 3x5mm
303140-O ALU SHIM 3x5x2MM - ORANGE (10)
303141-O ALU SHIM 3x5x1MM - ORANGE (10)
303142-O ALU SHIM 3x5x0.5MM - ORANGE (10)

I also bought a second pack of front ride height spacers
372294
372293
372292

I don't race WGT-R but race 10.5 boosted 1S on foams. I went for a standard low profile servo, 1S ESC, 1s LiPo and 64DP spur and pinions (the mesh is harder to get right but it is a bit smoother).

It would be worth getting some spare wheel ball racers as a knock can make them go gritty quite easily.
951438 BALL-BEARING 1/4“ x 3/8“ x 1/8“ FLANGED (2)

Apart from that I have a range of silicon oil for tuning the dampers (700-30,000) as well as the various front, side and centre springs.

Looks like this guy used stand offs for the rear axle mounts.
https://cimg7.ibsrv.net/gimg/www.rct...c17ff1ce45.jpg

I used Xray 1/10th scale shock pistons for front spacers under my arms on my CRC car. Did the same to raise the SRG servo.

I use the CRC tires, Sanwa Radio, Sanwa SRG or Ko propo 12 servos, 1s 7000-8000mah battery. 88/38 spur and pinion. You'll need the full narrow front arm spacer things from Xray as well.

Bodies? Mcalister Mxstang, Corvette, Protoform Cadillac, PF Corvette, are all popular. The darn P Zero Zonda thing is annoyingly popular. Wish PF would bring the Camaro back. The hideous Zoodiac Mclaren is too popular as well.

Last weekend very good training with old x10 2015...
https://cimg3.ibsrv.net/gimg/www.rct...1153d046f.jpeg

My club is running WGT Rubber Tire with 2S 21.5 on black carpet, and it looked like so much fun that I picked up an X10 that was initially setup for 1S 17.5.

I'm wondering if anyone else is running rubber tire and if so, what a good starting point for setup is? I'm finding that the 200mm rear width, with kit setup is not quite as nimble as I think it could/should be. It's got some skittering/skipping in the infield and is lagging about 3/10 behind my X1 with a similar setup. It seems like the car tunes more closely to the X12 than the X1 so I've been experimenting a bit with advice from my 1/12 scale friends and it's hit or miss.

I'm looking specifically for more initial steering as I'm pushing at speed, especially into our sweeper. The car otherwise feels very stable, maybe a bit too stable, and hard to push to the limit short of that understeer.

Currently:

200mm in the rear
Short wheel base
0 dot for track width (i bought both the 1 and 2 dot bearings for the front to play with and am trying 2 dot in to narrow the front)
gray springs up front
silver (soft) side springs (thinking about swapping to gold)
50k gear diff (thinking about going down to 30k)
20k side tubes
20k kingpins
5ish-mm (as close as I can get to) ride height all around, with ~0.8 droop over ride height at the middle
CRC premount RT1 tires
1deg toe
1.5deg camber
Everything else is kit

You folks have any advice?

Zero toe.
Ballast weight all the way forward, then try all the way back.
More droop.
Full small.
Way lighter in rear diff, I'm using a ball diff.
More front dope, less rear, fresher tires.
10k side tubes.

Rear spool.
As narrow rear track width as possible
7k side tubes.
soft frt spring
gold side spring
and probably the biggest improvement, CF frt arms.

my car is an absolute rocket at our track which is home to the largest onroad race in the world last year.(Canadian Nats)

if still needing more steering narrow the frt track width.

You mean CF lower arms from X12 US, or composite strengthen with CF?

I played around a bunch today, and think I'm pretty close to finding my setup, here's what seems to have worked well for me:

Full wide up front (+1 eccentric bearing... bushing?)
183mm rear
7k side tubes
700 cst shock oil (if i recall correctly... somewhere around there)
15k gear diff (will try 10k next race day)
gold side springs
gold (c1.5) front sprints
grey center spring
0.8mm droop over ride height in the center
5ish mm ride height all around
full sauce front and rear, with different sauces (SXT up front, TDK in the rear)
CRC RT1 premounts
Black carpt

The car drove very well, rotated easily but not too much, and got within 1/10 of my best lap time in my X1 (in fact, I was faster with the X10 today than my X1). I think I have a bit more to squeeze out of the car before I'm the bottleneck, though it was my own driving that landed me in third today. :lol:

The X12 Carbon arms. you will also need the track width inserts and alum risers for those arms as well since they are different than the plastic arms.

Really liking the X1 rear motor bulkhead with the fan mount plate.
https://cimg7.ibsrv.net/gimg/www.rct...785026452c.jpg

Are these in stock anywhere. I can't seem to find them.

https://cimg8.ibsrv.net/gimg/www.rct...6dfb363397.jpg
Picked up a 3D printer and the first part I made was a battery hold down for my X10. Only took 4 tries to get it right.

Are the X1 motor mount & left side a direct fit?

Yes they are.

Thank you :).