Im planning on buying rims and tires next summer. Im planning to get Linea Corse LM replicas. 19x8.5/19x10 and 235/35/19 | 265/30/19. Will this setup effect the speedo? Thanks guys! Here is a pic of the rim:ky:

http://www.wheeldude.com/gallery2/d/59263-3/lemans+front05.jpg

Yeah, it'd be better if you got 265/35/19 though in the back. Offset on wheels?

http://www.miata.net/garage/tirecalc.html

That will answer your tire sizing questions.

i guess the 35 side wall wont effect the speedo that much
http://i49.tinypic.com/25f64qp.jpg

here are more specs on the rim, and are the offsets ok? i wanna stretch the tire a bit so i dont know if i should do 255 or 265?
Product Details:
Wheel Style - Linea Corse Lemans
Wheel Diameter (Inches) - 19"
Wheel Width (Inches) - 8.5F/10R"
PCD Bolt Pattern - 5x114.3
Offset - 38F/43Rmm
Hub Bore - 73mm
Color - Hyper Silver with Polished Lip
Quantity - 4 Pcs. (1 set)
Price:

$1,299.00