Newbie here; I have a 2002 Roush 2 and it has 18-10 in the rear and 18-9 in the front. Curb rash on front left and a inch crack right rear I noted. So im going to get in the market here soon. I did note with the wheels I have now, the front seems a bit squirrely a bit too sensitive for me at over 80mph. Does anyone know that if I put 10-9 front and rear will it stabilize the ride a bit more.
Changes to scrub radius can have a significant effect on tracking and stability - scrub radius (other than stock) is controlled by wheel geometry. Alignment is also going to have an effect on stability, like in general more caster will result in more high speed stability when all else is equal.
When Ford was building their highest performing model they went with 17x9" wheels (square) , +26mm offset and 275/40r17 tires. I'm not suggesting that's perfect but I am suggesting the OE choice is all but guaranteed to not be the cause of any safety or stability compromises, particularly at speeds like 80mph which are legal on some public highways.
You might also look into aero - I'm not intimately familiar with Roush Mustangs but if an air dam is missing or damaged in front, or if the rear springs have sagged leading the car to cant rearward that can cause some handling degradation at speed too.
Hey yall! Ive got a basically stock 94 mustang and just wanted some help or advice on what specs to run. A previous owner had put on Acura TL wheels that are bent AF and running 2 inch spacers in the rear and just want something that wont need spacers to work with decent tire width. Current tire size is 235/45R17 and I was thinking it could use more traction in the rear (and new shocks all around, but thats for later haha). Thank you in advance! On another note, I am searching thru marketplace to maybe find oem mustang wheels with 245 wide tires
If your wheel spacers are hub-centric on both sides and installed with a torque wrench rather than some guy saying "eh, that's good" then there's not any safety concern. Most people think the stock rear wheel fitment on a stock 94-98 is bizarre - from some angles you can look down the side of the car and not even see the tire at all. Maybe that's not a concern for you, in which case ignore me and do what you're gonna do.
In particular with a V6 SN95 it's popular to swap the whole rear axle from a 99-04 GT because it can give you some other advantages & also it's 40mm wider (20mm per side) so the wheel fitment looks a lot more modern without a spacer. Completely doable in a driveway if you're a hands-on sort of person though it's getting harder to accomplish it for less than rent money anymore.
If you do choose to run spacers smaller than the 2" ones you have, anything less than about 25mm (approximately 1 inch) it's necessary to cut down your wheel studs or install short studs since those extend more than 1" from the wheel mounting surface. I'm running 20mm spacers with cut studs on my 94.
