Full Answer
Start with the factory numbers, because every fitment decision is measured against them.
Bolt pattern is 5x114.3, hub bore is 56.1mm, lug thread is M12x1.25, and the common factory wheel across most trims is 18x8.5 with +55 offset on a 245/40R18 tire.
Two of those cause more problems than the rest. The 56.1mm hub bore is small, and most aftermarket 5x114.3 wheels are machined to a larger universal bore - commonly 73.1mm - so they fit many different cars. You will usually need hub-centric rings, and skipping them leaves the wheel located by the lug taper alone, which is a recipe for vibration. The +55 offset is also high, which is why the factory wheel sits tucked in.
**The proven baseline is 18x9.5 +38 on 255/35R18** at or near stock height. Going from 18x8.5 +55 to 18x9.5 +38 moves the outer edge outward by roughly 30mm and the inner edge inward by roughly 12mm. That fills the arch noticeably while staying inside what the bodywork tolerates.
**Five things interact**, and changing any one shifts your odds.
Ride height is the big one. Lowering brings the tire up into the arch, and the first place a VB rubs is the rear plastic flare area. A setup that clears perfectly at stock height can catch over bumps or with passengers aboard once lowered.
Tire size matters in a way the numbers make clear. A 255/40R18 is roughly 1.2 percent taller than the factory 245/40, which puts it closer to the flare through the arc - and that is why the taller size drives most rubbing complaints. A 265/35R18 is roughly 1.6 percent shorter than stock but 20mm wider at the shoulder.
Tire brand is the one people forget. Two tires both marked 255/35R18 can differ meaningfully in actual section width, and a tire that runs wide for its marking is a common reason one owner rubs where another does not on identical wheels.
Camber matters, and it cuts the other way - more negative camber tucks the top of the tire inward and away from the flare, which is why alignment is sometimes the fitment fix rather than a parts problem.
And load. A car with four passengers sits lower than the empty one you test fitted.
**If you rub after lowering**, the options in rough order of cost are more negative camber, a slightly shorter or narrower tire, or rolling the rear flares. Note that meaningful drops often push rear camber beyond factory adjustment, which is when adjustable rear control arms become the fix.
**Practical advice:** decide your ride height before buying wheels. Buying an aggressive fitment and then lowering is the sequence most likely to produce a problem. Check load rating and speed rating. Buy hub rings. And if you are attempting anything more aggressive than the baseline, buy one wheel first and test fit it.
Last updated 3/26/2026