Fiat Mobi Bolt Pattern, Wheel & Tire Sizes
TL;DR
4x98 bolt pattern, M12x1.25 studs, 175/65 R14 on 14-inch wheels for all Mobi trims - always confirm the centre bore and torque figure on your own vehicle before fitting aftermarket wheels.
Fiat Mobi wheel and tire data - Brazil/Latin America market
The Mobi is built and sold primarily in Brazil and other Latin American markets (it was never sold in the US or Europe), so this page treats that version as the primary subject. It is a single generation model, internally referred to by Fiat as project 344, produced from 2016 to the present with a minor facelift around 2020 that did not change the wheel fitment according to the retailer and fitment listings reviewed.
Bolt pattern and stud thread
Multiple independent Brazilian parts retailers and OEM wheel listings agree the Mobi uses a 4x98 bolt pattern (4 bolts, 98 mm pitch circle diameter) with M12 x 1.25 wheel stud thread. This matches the pattern shared across several other small Fiat models built on the same Brazilian platform family (Argo, Cronos, Palio, Uno, Fiorino), and OEM-matched anti-theft bolt kits sold specifically for the Mobi confirm the M12x1.25 thread.
Centre bore
We could not find a centre bore (hub bore) figure specifically corroborated for the Mobi in the sources checked. Rather than guess, we recommend reading it directly off a wheel you remove from the car (measure the diameter of the round opening in the middle of the wheel) or asking a wheel shop to measure it with a bore gauge before buying aftermarket wheels, since an incorrect centre bore can cause vibration even when the bolt pattern matches.
Stock wheel and tire sizes
Fitment listings for multiple model years (2018 through 2022) show every Mobi trim - Easy, Like, Way and Trekking - leaving the factory on 14-inch wheels with 175/65 R14 tires. This is notable because the mechanically related Fiat Argo offers a 15-inch wheel with a wider tire on its Trekking trim, but the Mobi Trekking, at least in the years reviewed, keeps the same 14-inch, 175/65 R14 setup as the rest of the range. OEM steel wheels are commonly listed at a 5.5J width. Aftermarket alloy wheels are also sold in 15x6 (4x98) for the Mobi, but that is a non-factory upsize, not a stock configuration.
Where to confirm the numbers for your specific car
Because trim level, model year and factory options can all affect the exact figures, always confirm before buying wheels or tires by checking:
- The tire placard on the driver's door jamb (lists the factory tire size and cold inflation pressure)
- The owner's manual (lists wheel bolt torque and alternate approved tire sizes)
- The markings stamped into your current wheels (diameter, width and offset are usually stamped on the back or inside of the spokes)
- A Fiat dealer parts counter, which can look up the exact original wheel part number for your car's VIN
| Generation / years | Bolt pattern | Centre bore | Stud thread | Stock wheel sizes | Common tire sizes |
|---|---|---|---|---|---|
| Mobi (project 344), 2016-present, all trims | 4x98 | Not corroborated - measure your wheel or check the door placard | M12 x 1.25 | 14-inch (5.5J commonly listed for OEM steel wheels); 15x6 seen on aftermarket alloys | 175/65 R14 (factory, all trims including Trekking) |
Summary
| Market covered | Brazil / Latin America (Mobi was not sold in US/Europe) |
|---|---|
| Generations | One (project 344), 2016-present |
| Bolt pattern | 4x98 |
| Centre bore | Not corroborated - measure your wheel |
| Stud thread | M12 x 1.25 |
| Stock wheel size | 14-inch, all trims |
| Common tire size | 175/65 R14 |
Full diagnostics
For the complete step-by-step diagnostic and repair guide, see Fiat Mobi: Common Problems, Fault Codes & Repairs.
Frequently asked questions
What bolt pattern does the Fiat Mobi use?
The Fiat Mobi (Brazil/Latin America, 2016-present) uses a 4x98 bolt pattern - 4 wheel studs arranged on a 98 mm diameter circle - confirmed across OEM and aftermarket wheel listings for this model.
What size are the factory tires on a Fiat Mobi?
Fitment data for the 2018 through 2022 model years shows 175/65 R14 as the factory tire size across all trims, including Easy, Like, Way and Trekking, mounted on 14-inch wheels.
What is the wheel stud thread size on a Fiat Mobi?
The Mobi uses M12 x 1.25 wheel stud/bolt threads, confirmed by OEM-matched anti-theft wheel bolt kits and replacement wheel bolts sold specifically for this model.
Does the Fiat Mobi Trekking trim get bigger wheels than the base trim?
Not based on the fitment listings reviewed - the Trekking trim uses the same 14-inch wheel with 175/65 R14 tires as the Easy, Like and Way trims, unlike the related Fiat Argo, whose Trekking trim moves up to a 15-inch wheel and wider tire.