The wide wheels of TZR250 are used on SRX600. 

I replaced the deteriorated wheels with wheels from another YMAHA motorcycle model.
I decided to use the TZR250 rear exhaust (3MA) SP rear wheel.
17 inches would widen my options, but I'm particular about the rear 18 inches for the kick type SRX.
4.50×R18 wheels are relatively easy to obtain for the early FZR750/1000, but they look heavy, the discs are large, and they may be too wide.
This wheel is designed exclusively for SP and is rare, but if it is an 18-inch rim width of 4.5 and is a genuine Yamaha wheel, this wheel is the only option.
The front wheel is a simple TZR250 (2XT) single disc type wheel.